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Point mutation

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448:. Beta-hemoglobin is created from the genetic information on the HBB, or "hemoglobin, beta" gene found on chromosome 11p15.5. A single point mutation in this polypeptide chain, which is 147 amino acids long, results in the disease known as Sickle Cell Anemia. Sickle-cell anemia is an autosomal recessive disorder that affects 1 in 500 African Americans, and is one of the most common blood disorders in the United States. The single replacement of the sixth amino acid in the beta-globin, glutamic acid, with valine results in deformed red blood cells. These sickle-shaped cells cannot carry nearly as much oxygen as normal red blood cells and they get caught more easily in the capillaries, cutting off blood supply to vital organs. The single nucleotide change in the beta-globin means that even the smallest of exertions on the part of the carrier results in severe pain and even heart attack. Below is a chart depicting the first thirteen amino acids in the normal and abnormal 367:
in the function, protein localization, stability of the protein or protein complex. Many methods have been proposed to predict the effects of missense mutations on proteins. Machine learning algorithms train their models to distinguish known disease-associated from neutral mutations whereas other methods do not explicitly train their models but almost all methods exploit the evolutionary conservation assuming that changes at conserved positions tend to be more deleterious. While majority of methods provide a binary classification of effects of mutations into damaging and benign, a new level of annotation is needed to offer an explanation of why and how these mutations damage proteins.
217:), resulting in abnormal extension of a protein's carboxyl terminus. Start-gain creates an AUG start codon upstream of the original start site. If the new AUG is near the original start site, in-frame within the processed transcript and downstream to a ribosomal binding site, it can be used to initiate translation. The likely effect is additional amino acids added to the amino terminus of the original protein. Frame-shift mutations are also possible in start-gain mutations, but typically do not affect translation of the original protein. Start-loss is a point mutation in a transcript's AUG start codon, resulting in the reduction or elimination of protein production. 39: 359:, it can prohibit mitosis from occurring due to the lack of a complete chromosome. Problems can also arise during the processes of transcription and replication of DNA. These all prohibit the cell from reproduction and thus lead to the death of the cell. Long-term effects can be a permanent changing of a chromosome, which can lead to a mutation. These mutations can be either beneficial or detrimental. 31: 343:. The theory explains the diversity and history of living organisms on Earth. In relation to point mutations, it states that beneficial mutations allow the organism to thrive and reproduce, thereby passing its positively affected mutated genes on to the next generation. On the other hand, harmful mutations cause the organism to die or be less likely to reproduce in a phenomenon known as 272:. A single nucleotide can change, but the new codon specifies the same amino acid, resulting in an unmutated protein. This type of change is called synonymous change since the old and new codon code for the same amino acid. This is possible because 64 codons specify only 20 amino acids. Different codons can lead to differential protein expression levels, however. 160: 847:, RIP mutations are found in single copy regions, adjacent to the repeated elements. These regions are either non-coding regions or genes encoding small secreted proteins including avirulence genes. The degree of RIP within these single copy regions was proportional to their proximity to repetitive elements. 223:
code for a different amino acid. A missense mutation changes a codon so that a different protein is created, a non-synonymous change. Conservative mutations result in an amino acid change. However, the properties of the amino acid remain the same (e.g., hydrophobic, hydrophilic, etc.). At times, a
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and higher-frequency light have ionizing capability, which in turn can affect DNA. Reactive oxygen molecules with free radicals, which are a byproduct of cellular metabolism, can also be very harmful to DNA. These reactants can lead to both single-stranded and double-stranded DNA breaks. Third, bonds
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Hertwig studied sea urchins, and noticed that each egg contained one nucleus prior to fertilization and two nuclei after. This discovery proved that one spermatozoon could fertilize an egg, and therefore proved the process of meiosis. Hermann Fol continued Hertwig's research by testing the effects
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If the mutation occurs in the region of the gene where transcriptional machinery binds to the protein, the mutation can affect the way in which transcription factors bind to the protein. The mechanisms of transcription bind to a protein through recognition of short nucleotide sequences. A mutation
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acknowledged that the structure of DNA did indicate that there is some form of replicating process. However, there was not a lot of research done on this aspect of DNA until after Watson and Crick. People considered all possible methods of determining the replication process of DNA, but none were
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Rep and Kistler have speculated that the presence of highly repetitive regions containing transposons, may promote mutation of resident effector genes. So the presence of effector genes within such regions is suggested to promote their adaptation and diversification when exposed to strong selection
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Moreover, if the mutation occurs in the region of the gene where transcriptional machinery binds to the protein, the mutation can affect the binding of the transcription factors because the short nucleotide sequences recognized by the transcription factors will be altered. Mutations in this region
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Other effects of point mutations, or single nucleotide polymorphisms in DNA, depend on the location of the mutation within the gene. For example, if the mutation occurs in the region of the gene responsible for coding, the amino acid sequence of the encoded protein may be altered, causing a change
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Flemming began his research of cell division starting in 1868. The study of cells was an increasingly popular topic in this time period. By 1873, Schneider had already begun to describe the steps of cell division. Flemming furthered this description in 1874 and 1875 as he explained the steps in
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Point mutations can have several effects on the behavior and reproduction of a protein depending on where the mutation occurs in the amino acid sequence of the protein. If the mutation occurs in the region of the gene that is responsible for coding for the protein, the amino acid may be altered.
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The β-globin gene is found on the short arm of chromosome 11. The association of two wild-type α-globin subunits with two mutant β-globin subunits forms hemoglobin S (HbS). Under low-oxygen conditions (being at high altitude, for example), the absence of a polar amino acid at position six of the
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The HEXA gene makes part of an enzyme called beta-hexosaminidase A, which plays a critical role in the nervous system. This enzyme helps break down a fatty substance called GM2 ganglioside in nerve cells. Mutations in the HEXA gene disrupt the activity of beta-hexosaminidase A, preventing the
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more detail. He also argued with Schneider's findings that the nucleus separated into rod-like structures by suggesting that the nucleus actually separated into threads that in turn separated. Flemming concluded that cells replicate through cell division, to be more specific mitosis.
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whereby leakage of RIP was detected in single copy sequences at least 930 bp from the boundary of neighbouring duplicated sequences. To elucidate the mechanism of detection of repeated sequences leading to RIP may allow to understand how the flanking sequences may also be affected.
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breakdown of the fatty substances. As a result, the fatty substances accumulate to deadly levels in the brain and spinal cord. The buildup of GM2 ganglioside causes progressive damage to the nerve cells. This is the cause of the signs and symptoms of Tay-Sachs disease.
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change to one amino acid in the protein is not detrimental to the organism as a whole. Most proteins can withstand one or two point mutations before their function changes. Non-conservative mutations result in an amino acid change that has different properties than the
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based on the environment where the organism lives. An advantageous mutation can create an advantage for that organism and lead to the trait's being passed down from generation to generation, improving and benefiting the entire population. The scientific theory of
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mutations within repeats, however, the mechanism that detects the repeated sequences is unknown. RID is the only known protein essential for RIP. It is a DNA methyltransferease-like protein, that when mutated or knocked out results in loss of RIP. Deletion of the
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This slight change in the sequence of amino acids can cause a change in the function, activation of the protein meaning how it binds with a given enzyme, where the protein will be located within the cell, or the amount of free energy stored within the protein.
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in this region may alter these sequences and, thus, change the way the transcription factors bind to the protein. Mutations in this region can affect the efficiency of gene transcription, which controls both the levels of mRNA and overall protein levels.
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sequence of an organism's genome. Point mutations have a variety of effects on the downstream protein product—consequences that are moderately predictable based upon the specifics of the mutation. These consequences can range from no effect (e.g.
103:. DNA replication occurs when one double-stranded DNA molecule creates two single strands of DNA, each of which is a template for the creation of the complementary strand. A single point mutation can change the whole DNA sequence. Changing one 1047:
successful until Meselson and Stahl. Meselson and Stahl introduced a heavy isotope into some DNA and traced its distribution. Through this experiment, Meselson and Stahl were able to prove that DNA reproduces semi-conservatively.
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and go through its sexual cycle to activate the RIP machinery. Many different mutations within the duplicated gene are obtained from even a single fertilization event so that inactivated alleles, usually due to
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Serra, E; Ars, E; Ravella, A; Sánchez, A; Puig, S; Rosenbaum, T; Estivill, X; Lázaro, C (2001). "Somatic NF1 mutational spectrum in benign neurofibromas: MRNA splice defects are common among point mutations".
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There are different short-term and long-term effects that can arise from mutations. Smaller ones would be a halting of the cell cycle at numerous points. This means that a codon coding for the amino acid
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in DNA eventually degrade, which creates another problem to keep the integrity of DNA to a high standard. There can also be replication errors that lead to substitution, insertion, or deletion mutations.
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may be changed to a stop codon, causing the proteins that should have been produced to be deformed and unable to complete their intended tasks. Because the mutations can affect the DNA and thus the
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or deletions of a single base pair (which has more of an adverse effect on the synthesized protein due to the nucleotides' still being read in triplets, but in different frames: a mutation called a
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or extreme heat, or chemical (molecules that misplace base pairs or disrupt the helical shape of DNA). Mutagens associated with cancers are often studied to learn about cancer and its prevention.
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is caused by a point mutation in the β-globin chain of hemoglobin, causing the hydrophilic amino acid glutamic acid to be replaced with the hydrophobic amino acid valine at the sixth position.
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Li, Minghui; Goncearenco, Alexander; Panchenko, Anna R. (2017). "Annotating Mutational Effects on Proteins and Protein Interactions: Designing Novel and Revisiting Existing Protocols".
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gene; this leads to an activation of the RAF protein which causes unlimited proliferative signalling in cancer cells. These are both examples of a non-conservative (missense) mutation.
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identity may also be subject to RIP. Though the exact mechanism of repeat recognition and mutagenesis are poorly understood, RIP results in repeated sequences undergoing multiple
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is a protein found in red blood cells, and is responsible for the transportation of oxygen through the body. There are two subunits that make up the hemoglobin protein:
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with another pyrimidine. Transversions are replacement of a purine with a pyrimidine or vice versa. There is a systematic difference in mutation rates for
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Point mutations that occur in non-coding sequences are most often without consequences, although there are exceptions. If the mutated base pair is in the
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Idnurm A, Howlett BJ (June 2003). "Analysis of loss of pathogenicity mutants reveals that repeat-induced point mutations can occur in the Dothideomycete
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mutations. Genomic evidence indicates that RIP occurs or has occurred in a variety of fungi while experimental evidence indicates that RIP is active in
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suggested that leakage of RIP mutation might occur within a relatively short distance of a RIP-affected repeat. Indeed, this has been reported in
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when translated to protein. When one of these codons is changed by a point mutation, the corresponding amino acid of the protein is changed.
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is a genetic defect that is passed from parent to child. This genetic defect is located in the HEXA gene, which is found on chromosome 15.
2499:"A gene essential for de novo methylation and development in Ascobolus reveals a novel type of eukaryotic DNA methyltransferase structure" 2716: 920: 397: 174:
coined the terms "transitions" or "transversions" to categorize different types of point mutations. Transitions are replacement of a
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Selker EU, Cambareri EB, Jensen BC, Haack KR (December 1987). "Rearrangement of duplicated DNA in specialized cells of Neurospora".
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can affect rate of efficiency of gene transcription, which in turn can alter levels of mRNA and, thus, protein levels in general.
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Mohyuddin, A; Neary, W. J.; Wallace, A; Wu, C. L.; Purcell, S; Reid, H; Ramsden, R. T.; Read, A; Black, G; Evans, D. G. (2002).
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sequence of a gene, then the expression of the gene may change. Also, if the mutation occurs in the splicing site of an
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of injecting several spermatozoa into an egg, and found that the process did not work with more than one spermatozoon.
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The RIP mutations do not seem to be limited to repeated sequences. Indeed, for example, in the phytopathogenic fungus
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Cuomo CA, Güldener U, Xu JR, Trail F, Turgeon BG, Di Pietro A, Walton JD, Ma LJ, et al. (September 2007). "The
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As RIP mutation is traditionally observed to be restricted to repetitive regions and not single copy regions, Fudal
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Coleman JJ, Rounsley SD, Rodriguez-Carres M, Kuo A, Wasmann CC, Grimwood J, Schmutz J, et al. (August 2009).
2825: 2328:"High frequency repeat-induced point mutation (RIP) is not associated with efficient recombination in Neurospora" 972: 2688: 1774: 1555:"Somatic NF1 mutation spectra in a family with neurofibromatosis type 1: Toward a theory of genetic modifiers" 1796:
Clutterbuck AJ (2011). "Genomic evidence of repeat-induced point mutation (RIP) in filamentous ascomycetes".
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Because RIP is so efficient at detecting and mutating repeats, fungal biologists often use it as a tool for
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Meselson, Stahl, and the replication of DNA : a history of "the most beautiful experiment in biology"
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of the sequence (if there were any to begin with). In addition, many of the C-bearing nucleotides become
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in the coding sequence. This hypermutation of G-C to A-T in repetitive sequences eliminates functional
1203: 2739: 2451: 2392: 2190: 2025: 1604:"Molecular genetic analysis of the NF2 gene in young patients with unilateral vestibular schwannomas" 1463: 1284: 1233: 1119: 897: 787: 320: 285: 88: 2440:"A cytosine methyltransferase homologue is essential for sexual development in Aspergillus nidulans" 2327: 1401:"Messing up disorder: how do missense mutations in the tumor suppressor protein APC lead to cancer?" 396:. For instance, point mutations in Adenomatous Polyposis Coli promote tumorigenesis. A novel assay, 2804: 2744: 837: 445: 289: 229: 2283:"Repeat-induced point mutation (RIP) as an alternative mechanism of evolution toward virulence in 228:. The protein may lose its function, which can result in a disease in the organism. For example, 2635: 2528: 2049: 1910: 1861: 1584: 1535: 1308: 1257: 989: 985: 769: 763: 427: 301: 220: 202: 1747: 2903: 2789: 2784: 2702: 2662: 2627: 2590: 2563: 2520: 2479: 2420: 2357: 2308: 2263: 2206: 2159: 2104: 2041: 1994: 1955: 1902: 1853: 1813: 1684: 1633: 1576: 1527: 1491: 1432: 1367: 1349: 1339: 1300: 1249: 1147: 944: 940: 820: 793: 757: 721: 408: 344: 327: 206: 142: 131: 2582: 2860: 2809: 2619: 2555: 2510: 2469: 2459: 2410: 2400: 2347: 2339: 2298: 2253: 2198: 2149: 2139: 2094: 2084: 2033: 1986: 1945: 1928:
Ikeda K, Nakayashiki H, Kataoka T, Tamba H, Hashimoto Y, Tosa Y, Mayama S (September 2002).
1892: 1845: 1805: 1676: 1623: 1615: 1566: 1519: 1481: 1471: 1422: 1412: 1357: 1331: 1292: 1241: 1174: 1137: 1127: 1027: 1013: 1656:. National Center for Biotechnology Information (US). 29 September 1998 – via PubMed. 2799: 2684: 2377:"A cytosine methyltransferase homologue is essential for repeat-induced point mutation in 1452:"Determining biophysical protein stability in lysates by a fast proteolysis assay, FASTpp" 1039: 1035: 815: 798: 781: 416: 412: 400:, might help swift screening of specific stability defects in individual cancer patients. 261: 123: 100: 2559: 2497:
Malagnac F, Wendel B, Goyon C, Faugeron G, Zickler D, Rossignol JL, et al. (1997).
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Selker EU (1990). "Premeiotic instability of repeated sequences in Neurospora crassa".
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include stop-gain and start-loss. Stop-gain is a mutation that results in a premature
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Freese, Ernst (1959). "The Specific Mutagenic Effect of Base Analogues on Phage T4".
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is affected by genomic environment and exposure to resistance genes in host plants"
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genome reveals a link between localized polymorphism and pathogen specialization".
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Graïa F, Lespinet O, Rimbault B, Dequard-Chablat M, Coppin E, Picard M (May 2001).
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Hoeijmakers JH (May 2001). "Genome maintenance mechanisms for preventing cancer".
194:(Beta). Transition mutations are about ten times more common than transversions. 30: 2464: 2144: 2089: 1476: 1335: 1881:"Genome quality control: RIP (repeat-induced point mutation) comes to Podospora" 1680: 1080: 964: 952: 449: 255: 42:
Schematic of a single-stranded RNA molecule illustrating a series of three-base
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may change, thereby changing the entire protein. The new protein is called a
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Paweletz N (January 2001). "Walther Flemming: pioneer of mitosis research".
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can lead to beneficial as well as harmful traits or diseases. This leads to
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Point mutations of a codon, classified by their impact on protein sequence
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is caused by a single point mutation (a missense mutation) in the beta-
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where a single nucleotide base is changed, inserted or deleted from a
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Replacement, insertion, or deletion of a single DNA or RNA nucleotide
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by invading and multiplying within the genome. RIP creates multiple
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Wiest, V; Eisenbarth, I; Schmegner, C; Krone, W; Assum, G (2003).
1330:. Methods in Molecular Biology. Vol. 1550. pp. 235–260. 240: 135: 57: 43: 1934:: implications for its sexual cycle in the natural field context" 91:), with regard to protein production, composition, and function. 968: 236: 2698: 931:
RIP is believed to have evolved as a defense mechanism against
2073:: contribution of supernumerary chromosomes to gene expansion" 1667:
Hsia CC (January 1998). "Respiratory function of hemoglobin".
733: 441: 268:"). A silent mutation does not affect the functioning of the 79: 75: 1388:. Genetic Engineering & Biotechnology News. 18 June 2008. 141:
There are multiple ways for point mutations to occur. First,
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in length are vulnerable to RIP. Repeats with as low as 80%
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Point mutations in multiple tumor suppressor proteins cause
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Van de Wouw AP, Cozijnsen AJ, Hane JK, et al. (2010).
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The organic codes: an introduction to semantic biology
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Davies H, Bignell GR, Cox C, et al. (June 2002).
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Minde DP, Anvarian Z, Rüdiger SG, Maurice MM (2011).
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A to G point mutation detected with Sanger sequencing
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Freitag M, Williams RL, Kothe GO, Selker EU (2002).
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Fudal I, Ross S, Brun H, et al. (August 2009).
2843: 2818: 2775: 2768: 2732: 2326:Irelan JT, Hagemann AT, Selker EU (December 1994). 130:. Mutagens can be physical, such as radiation from 2654: 2438:Lee DW, Freitag M, Selker EU, Aramayo R (2008). 1194: 1192: 1190: 1188: 1831: 1829: 1827: 1012:was discovered several years later in 1882 by 363:is an example of how they can be detrimental. 2710: 2124:"Evolution of linked avirulence effectors in 8: 1219:"Mutations of the BRAF gene in human cancer" 315:By altering just one amino acid, the entire 1718: 1716: 919:, results in fertility defects and loss of 383:Specific diseases caused by point mutations 339:is greatly dependent on point mutations in 126:. The rate of mutation may be increased by 118:Point mutations may arise from spontaneous 2772: 2717: 2703: 2695: 2589:. Cambridge University Press. p. 13. 1741: 1739: 99:Point mutations usually take place during 2687:at the U.S. National Library of Medicine 2514: 2473: 2463: 2414: 2404: 2351: 2302: 2257: 2153: 2143: 2098: 2088: 1949: 1896: 1627: 1570: 1485: 1475: 1450:Minde DP, Maurice MM, Rüdiger SG (2012). 1426: 1416: 1361: 1141: 1131: 276:Single base pair insertions and deletions 2844:Mutation with respect to overall fitness 1930:"Repeat-induced point mutation (RIP) in 921:methylation induced premeiotically (MIP) 579: 457: 158: 37: 29: 1072: 807:RIP occurs during the sexual stage in 155:Transition/transversion categorization 2242:: the world of the end as we know it" 1386:"A Shortcut to Personalized Medicine" 1000:The cellular reproduction process of 797:, sequences mutated by RIP are often 7: 2238:"Telomeres in the rice blast fungus 581:Sequence for sickle-cell hemoglobin 411:is caused by point mutations in the 2899:Modification of genetic information 2560:10.1146/annurev.ge.24.120190.003051 1034:are credited with the discovery of 111:may change the amino acid that the 2769:Mutation with respect to structure 2653:Holmes, Frederic Lawrence (2001). 398:Fast parallel proteolysis (FASTpp) 25: 2177:Rep M, Kistler HC (August 2010). 967:. A second copy of a single-copy 955:, thus decreasing transcription. 811:after fertilization but prior to 264:code for the same amino acid (a " 166:(Alpha) and transversions (Beta). 2259:10.1111/j.1574-6968.2007.00812.x 1951:10.1046/j.1365-2958.2002.03101.x 1898:10.1046/j.1365-2958.2001.02367.x 988:, as well as alleles containing 1709:. National Library of Medicine. 459:Sequence for normal hemoglobin 87:) to deleterious effects (e.g. 1: 2516:10.1016/S0092-8674(00)80410-9 1991:10.1016/S1087-1845(02)00588-1 1179:10.1016/S0022-2836(59)80038-3 726:repeat-induced point mutation 716:Repeat-induced point mutation 2465:10.1371/journal.pone.0002531 2145:10.1371/journal.ppat.1001180 2090:10.1371/journal.pgen.1000618 1850:10.1016/0092-8674(87)90097-3 1477:10.1371/journal.pone.0046147 1336:10.1007/978-1-4939-6747-6_17 1112:Proc. Natl. Acad. Sci. U.S.A 1106:Freese, Ernst (April 1959). 243:into GUG, which encodes the 2583:"The problem of generation" 2581:Barbieri, Marcello (2003). 2344:10.1093/genetics/138.4.1093 2291:Mol. Plant Microbe Interact 1681:10.1056/NEJM199801223380407 1608:Journal of Medical Genetics 2925: 2826:Chromosomal translocations 2661:. Yale University Press. 2236:Farman ML (August 2007). 2203:10.1016/j.pbi.2010.04.004 1810:10.1016/j.fgb.2010.09.002 198:Functional categorization 2689:Medical Subject Headings 2612:Nat. Rev. Mol. Cell Biol 2385:Proc Natl Acad Sci U S A 1703:"HBB — Hemoglobin, Beta" 1418:10.1186/1476-4598-10-101 959:Use in molecular biology 50:codon corresponds to an 2866:Nearly neutral mutation 2038:10.1126/science.1143708 1707:Genetics Home Reference 979:. The fungus must then 266:synonymous substitution 2876:Nonsynonymous mutation 2831:Chromosomal inversions 2733:Mechanisms of mutation 2406:10.1073/pnas.132212899 2304:10.1094/MPMI-22-8-0932 2285:Leptosphaeria maculans 2183:Curr. Opin. Plant Biol 2126:Leptosphaeria maculans 1975:Leptosphaeria maculans 776:Leptosphaeria maculans 732:is a process by which 167: 143:ultraviolet (UV) light 63: 55: 35: 18:Base-pair substitution 2856:Advantageous mutation 2795:Conservative mutation 1771:"Causes of Tay-Sachs" 1724:"Anemia, Sickle Cell" 1524:10.1007/s004390100514 1133:10.1073/pnas.45.4.622 933:transposable elements 162: 61: 41: 33: 2851:Deleterious mutation 2819:Large-scale mutation 2246:FEMS Microbiol. Lett 2071:Nectria haematococca 2014:Fusarium graminearum 1620:10.1136/jmg.39.5.315 898:Aspergillus nidulans 838:transition mutations 788:Nectria haematococca 296:General consequences 284:is used to describe 239:that converts a GAG 182:or replacement of a 89:frameshift mutations 85:synonymous mutations 2871:Synonymous mutation 2805:Frameshift mutation 2456:2008PLoSO...3.2531L 2397:2002PNAS...99.8802F 2195:2010COPB...13..420R 2030:2007Sci...317.1400C 1468:2012PLoSO...746147M 1289:2001Natur.411..366H 1246:10.1038/nature00766 1238:2002Natur.417..949D 1124:1959PNAS...45..622F 912:Ascobolus immersens 582: 460: 452:polypeptide chain. 290:frameshift mutation 280:Sometimes the term 230:sickle-cell disease 2240:Magnaporthe oryzae 1932:Magnaporthe grisea 1748:"Genetic Mutation" 1572:10.1002/humu.10272 1087:. 22 November 2016 1085:Biology Dictionary 1004:was discovered by 990:missense mutations 986:nonsense mutations 945:nonsense mutations 770:Magnaporthe grisea 764:Podospora anserina 580: 458: 428:Sickle-cell anemia 423:Sickle-cell anemia 328:germline mutations 221:Missense mutations 203:Nonsense mutations 178:base with another 168: 122:that occur during 64: 56: 36: 2909:Molecular biology 2884: 2883: 2839: 2838: 2790:Missense mutation 2785:Nonsense mutation 2668:978-0-300-08540-2 2596:978-0-521-53100-9 2379:Neurospora crassa 1979:Fungal Genet Biol 1798:Fungal Genet Biol 1746:Clancy S (2008). 1729:Genes and Disease 1653:Genes and Disease 1345:978-1-4939-6745-2 1206:on 11 April 2005. 1200:"Genetics Primer" 992:can be obtained. 935:, which resemble 821:Neurospora crassa 794:Neurospora crassa 758:Neurospora crassa 722:molecular biology 706:Tay–Sachs disease 700:Tay–Sachs disease 697: 696: 575: 574: 409:Neurofibromatosis 404:Neurofibromatosis 345:natural selection 211:a stop was gained 207:termination codon 16:(Redirected from 2916: 2861:Neutral mutation 2810:Dynamic mutation 2773: 2719: 2712: 2705: 2696: 2673: 2672: 2660: 2650: 2644: 2643: 2624:10.1038/35048077 2607: 2601: 2600: 2578: 2572: 2571: 2543: 2537: 2536: 2518: 2494: 2488: 2487: 2477: 2467: 2435: 2429: 2428: 2418: 2408: 2372: 2366: 2365: 2355: 2323: 2317: 2316: 2306: 2278: 2272: 2271: 2261: 2233: 2227: 2226: 2224: 2222: 2213:. Archived from 2174: 2168: 2167: 2157: 2147: 2138:(11): e1001180. 2119: 2113: 2112: 2102: 2092: 2064: 2058: 2057: 2024:(5843): 1400–2. 2009: 2003: 2002: 1970: 1964: 1963: 1953: 1944:(5): 1355–1364. 1925: 1919: 1918: 1900: 1876: 1870: 1869: 1833: 1822: 1821: 1793: 1787: 1786: 1784: 1782: 1777:on 6 August 2020 1773:. Archived from 1766: 1760: 1759: 1752:Nature Education 1743: 1734: 1733: 1720: 1711: 1710: 1699: 1693: 1692: 1664: 1658: 1657: 1648: 1642: 1641: 1631: 1599: 1593: 1592: 1574: 1550: 1544: 1543: 1506: 1500: 1499: 1489: 1479: 1447: 1441: 1440: 1430: 1420: 1396: 1390: 1389: 1382: 1376: 1375: 1365: 1323: 1317: 1316: 1297:10.1038/35077232 1283:(6835): 366–74. 1272: 1266: 1265: 1232:(6892): 949–54. 1223: 1214: 1208: 1207: 1202:. Archived from 1196: 1183: 1182: 1162: 1156: 1155: 1145: 1135: 1103: 1097: 1096: 1094: 1092: 1081:"Point Mutation" 1077: 1028:Matthew Meselson 1014:Walther Flemming 828:of at least 400 826:repeat sequences 662: 607: 583: 540: 485: 461: 262:Silent mutations 21: 2924: 2923: 2919: 2918: 2917: 2915: 2914: 2913: 2889: 2888: 2885: 2880: 2835: 2814: 2800:Silent mutation 2764: 2728: 2723: 2681: 2676: 2669: 2652: 2651: 2647: 2609: 2608: 2604: 2597: 2580: 2579: 2575: 2545: 2544: 2540: 2496: 2495: 2491: 2437: 2436: 2432: 2374: 2373: 2369: 2338:(4): 1093–103. 2325: 2324: 2320: 2280: 2279: 2275: 2235: 2234: 2230: 2220: 2218: 2176: 2175: 2171: 2121: 2120: 2116: 2083:(8): e1000618. 2069:"The genome of 2066: 2065: 2061: 2011: 2010: 2006: 1972: 1971: 1967: 1927: 1926: 1922: 1878: 1877: 1873: 1835: 1834: 1825: 1795: 1794: 1790: 1780: 1778: 1768: 1767: 1763: 1745: 1744: 1737: 1722: 1721: 1714: 1701: 1700: 1696: 1669:N. Engl. J. Med 1666: 1665: 1661: 1650: 1649: 1645: 1601: 1600: 1596: 1552: 1551: 1547: 1508: 1507: 1503: 1449: 1448: 1444: 1398: 1397: 1393: 1384: 1383: 1379: 1346: 1325: 1324: 1320: 1274: 1273: 1269: 1221: 1216: 1215: 1211: 1198: 1197: 1186: 1164: 1163: 1159: 1105: 1104: 1100: 1090: 1088: 1079: 1078: 1074: 1070: 1053: 1036:DNA replication 998: 961: 929: 869: 816:DNA replication 782:Gibberella zeae 718: 702: 660: 605: 577: 538: 483: 455: 425: 417:Neurofibromin 2 413:Neurofibromin 1 406: 390: 385: 321:protein variant 298: 278: 215:a stop was lost 200: 157: 152: 124:DNA replication 101:DNA replication 97: 28: 23: 22: 15: 12: 11: 5: 2922: 2920: 2912: 2911: 2906: 2901: 2891: 2890: 2882: 2881: 2879: 2878: 2873: 2868: 2863: 2858: 2853: 2847: 2845: 2841: 2840: 2837: 2836: 2834: 2833: 2828: 2822: 2820: 2816: 2815: 2813: 2812: 2807: 2802: 2797: 2792: 2787: 2781: 2779: 2777:Point mutation 2770: 2766: 2765: 2763: 2762: 2761: 2760: 2755: 2747: 2742: 2736: 2734: 2730: 2729: 2724: 2722: 2721: 2714: 2707: 2699: 2693: 2692: 2685:Point+Mutation 2680: 2679:External links 2677: 2675: 2674: 2667: 2645: 2602: 2595: 2573: 2548:Annu Rev Genet 2538: 2489: 2430: 2391:(13): 8802–7. 2367: 2318: 2273: 2228: 2217:on 2 June 2020 2169: 2114: 2059: 2004: 1965: 1920: 1891:(3): 586–595. 1871: 1844:(5): 741–752. 1823: 1788: 1761: 1735: 1712: 1694: 1659: 1643: 1594: 1559:Human Mutation 1545: 1512:Human Genetics 1501: 1462:(10): e46147. 1442: 1391: 1377: 1344: 1318: 1267: 1209: 1184: 1157: 1098: 1071: 1069: 1066: 1065: 1064: 1059: 1052: 1049: 1032:Franklin Stahl 997: 994: 960: 957: 928: 925: 868: 865: 809:haploid nuclei 717: 714: 701: 698: 695: 694: 689: 684: 679: 674: 669: 664: 657: 652: 647: 642: 637: 632: 628: 627: 624: 621: 618: 615: 612: 609: 602: 599: 596: 593: 590: 587: 573: 572: 567: 562: 557: 552: 547: 542: 535: 530: 525: 520: 515: 510: 506: 505: 502: 499: 496: 493: 490: 487: 480: 477: 474: 471: 468: 465: 424: 421: 405: 402: 389: 386: 384: 381: 297: 294: 282:point mutation 277: 274: 199: 196: 156: 153: 151: 150:Categorization 148: 96: 93: 68:point mutation 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2921: 2910: 2907: 2905: 2902: 2900: 2897: 2896: 2894: 2887: 2877: 2874: 2872: 2869: 2867: 2864: 2862: 2859: 2857: 2854: 2852: 2849: 2848: 2846: 2842: 2832: 2829: 2827: 2824: 2823: 2821: 2817: 2811: 2808: 2806: 2803: 2801: 2798: 2796: 2793: 2791: 2788: 2786: 2783: 2782: 2780: 2778: 2774: 2771: 2767: 2759: 2756: 2754: 2751: 2750: 2749:Substitution 2748: 2746: 2743: 2741: 2738: 2737: 2735: 2731: 2727: 2720: 2715: 2713: 2708: 2706: 2701: 2700: 2697: 2690: 2686: 2683: 2682: 2678: 2670: 2664: 2659: 2658: 2649: 2646: 2641: 2637: 2633: 2629: 2625: 2621: 2617: 2613: 2606: 2603: 2598: 2592: 2588: 2584: 2577: 2574: 2569: 2565: 2561: 2557: 2553: 2549: 2542: 2539: 2534: 2530: 2526: 2522: 2517: 2512: 2509:(2): 281–90. 2508: 2504: 2500: 2493: 2490: 2485: 2481: 2476: 2471: 2466: 2461: 2457: 2453: 2449: 2445: 2441: 2434: 2431: 2426: 2422: 2417: 2412: 2407: 2402: 2398: 2394: 2390: 2386: 2382: 2380: 2371: 2368: 2363: 2359: 2354: 2349: 2345: 2341: 2337: 2333: 2329: 2322: 2319: 2314: 2310: 2305: 2300: 2297:(8): 932–41. 2296: 2292: 2288: 2286: 2277: 2274: 2269: 2265: 2260: 2255: 2252:(2): 125–32. 2251: 2247: 2243: 2241: 2232: 2229: 2216: 2212: 2208: 2204: 2200: 2196: 2192: 2188: 2184: 2180: 2173: 2170: 2165: 2161: 2156: 2151: 2146: 2141: 2137: 2133: 2129: 2127: 2118: 2115: 2110: 2106: 2101: 2096: 2091: 2086: 2082: 2078: 2074: 2072: 2063: 2060: 2055: 2051: 2047: 2043: 2039: 2035: 2031: 2027: 2023: 2019: 2015: 2008: 2005: 2000: 1996: 1992: 1988: 1984: 1980: 1976: 1969: 1966: 1961: 1957: 1952: 1947: 1943: 1939: 1938:Mol Microbiol 1935: 1933: 1924: 1921: 1916: 1912: 1908: 1904: 1899: 1894: 1890: 1886: 1885:Mol Microbiol 1882: 1875: 1872: 1867: 1863: 1859: 1855: 1851: 1847: 1843: 1839: 1832: 1830: 1828: 1824: 1819: 1815: 1811: 1807: 1804:(3): 306–26. 1803: 1799: 1792: 1789: 1776: 1772: 1765: 1762: 1757: 1753: 1749: 1742: 1740: 1736: 1731: 1730: 1725: 1719: 1717: 1713: 1708: 1704: 1698: 1695: 1690: 1686: 1682: 1678: 1675:(4): 239–47. 1674: 1670: 1663: 1660: 1655: 1654: 1647: 1644: 1639: 1635: 1630: 1625: 1621: 1617: 1614:(5): 315–22. 1613: 1609: 1605: 1598: 1595: 1590: 1586: 1582: 1578: 1573: 1568: 1564: 1560: 1556: 1549: 1546: 1541: 1537: 1533: 1529: 1525: 1521: 1518:(5): 416–29. 1517: 1513: 1505: 1502: 1497: 1493: 1488: 1483: 1478: 1473: 1469: 1465: 1461: 1457: 1453: 1446: 1443: 1438: 1434: 1429: 1424: 1419: 1414: 1410: 1406: 1402: 1395: 1392: 1387: 1381: 1378: 1373: 1369: 1364: 1359: 1355: 1351: 1347: 1341: 1337: 1333: 1329: 1322: 1319: 1314: 1310: 1306: 1302: 1298: 1294: 1290: 1286: 1282: 1278: 1271: 1268: 1263: 1259: 1255: 1251: 1247: 1243: 1239: 1235: 1231: 1227: 1220: 1213: 1210: 1205: 1201: 1195: 1193: 1191: 1189: 1185: 1180: 1176: 1173:(2): 87–105. 1172: 1168: 1161: 1158: 1153: 1149: 1144: 1139: 1134: 1129: 1125: 1121: 1118:(4): 622–33. 1117: 1113: 1109: 1102: 1099: 1086: 1082: 1076: 1073: 1067: 1063: 1060: 1058: 1057:Missense mRNA 1055: 1054: 1050: 1048: 1045: 1041: 1037: 1033: 1029: 1025: 1021: 1017: 1015: 1011: 1007: 1006:Oscar Hertwig 1003: 995: 993: 991: 987: 982: 978: 974: 970: 966: 958: 956: 954: 950: 949:gene products 946: 942: 938: 934: 926: 924: 922: 918: 914: 913: 908: 904: 900: 899: 894: 889: 886: 882: 878: 874: 866: 864: 861: 857: 852: 848: 846: 841: 839: 835: 831: 827: 823: 822: 817: 814: 810: 805: 803: 800: 796: 795: 790: 789: 784: 783: 778: 777: 772: 771: 766: 765: 760: 759: 754: 751: 747: 743: 739: 735: 731: 727: 723: 715: 713: 709: 707: 704:The cause of 699: 693: 690: 688: 685: 683: 680: 678: 675: 673: 670: 668: 665: 663: 658: 656: 653: 651: 648: 646: 643: 641: 638: 636: 633: 630: 629: 625: 622: 619: 616: 613: 610: 603: 600: 597: 594: 591: 588: 585: 584: 578: 571: 568: 566: 563: 561: 558: 556: 553: 551: 548: 546: 543: 541: 536: 534: 531: 529: 526: 524: 521: 519: 516: 514: 511: 508: 507: 503: 500: 497: 494: 491: 488: 481: 478: 475: 472: 469: 466: 463: 462: 456: 453: 451: 447: 446:alpha-globins 443: 439: 435: 431: 429: 422: 420: 418: 414: 410: 403: 401: 399: 395: 387: 382: 380: 376: 372: 368: 364: 362: 358: 354: 348: 346: 342: 338: 333: 329: 324: 322: 318: 313: 311: 307: 303: 295: 293: 291: 287: 283: 275: 273: 271: 267: 263: 259: 257: 253: 252:glutamic acid 249: 246: 242: 238: 235: 231: 227: 222: 218: 216: 212: 208: 204: 197: 195: 193: 192:transversions 189: 185: 181: 177: 173: 165: 161: 154: 149: 147: 144: 139: 137: 133: 129: 125: 121: 116: 114: 110: 106: 102: 94: 92: 90: 86: 81: 77: 73: 70:is a genetic 69: 60: 53: 49: 46:. Each three- 45: 40: 32: 19: 2886: 2776: 2753:Transversion 2656: 2648: 2615: 2611: 2605: 2586: 2576: 2551: 2547: 2541: 2506: 2502: 2492: 2450:(6): e2531. 2447: 2443: 2433: 2388: 2384: 2378: 2370: 2335: 2331: 2321: 2294: 2290: 2284: 2276: 2249: 2245: 2239: 2231: 2219:. Retrieved 2215:the original 2189:(4): 420–6. 2186: 2182: 2172: 2135: 2131: 2125: 2117: 2080: 2076: 2070: 2062: 2021: 2017: 2013: 2007: 1985:(1): 31–37. 1982: 1978: 1974: 1968: 1941: 1937: 1931: 1923: 1888: 1884: 1874: 1841: 1837: 1801: 1797: 1791: 1779:. Retrieved 1775:the original 1764: 1755: 1751: 1728: 1706: 1697: 1672: 1668: 1662: 1652: 1646: 1611: 1607: 1597: 1565:(6): 423–7. 1562: 1558: 1548: 1515: 1511: 1504: 1459: 1455: 1445: 1408: 1404: 1394: 1380: 1327: 1321: 1280: 1276: 1270: 1229: 1225: 1212: 1204:the original 1170: 1167:J. Mol. Biol 1166: 1160: 1115: 1111: 1101: 1089:. Retrieved 1084: 1075: 1026: 1022: 1018: 999: 962: 930: 927:Consequences 916: 910: 906: 902: 896: 892: 870: 859: 855: 853: 849: 844: 842: 819: 806: 801: 792: 786: 780: 774: 768: 762: 756: 736:accumulates 729: 725: 719: 710: 703: 576: 454: 442:beta-globins 436: 432: 426: 407: 391: 377: 373: 369: 365: 349: 325: 314: 299: 281: 279: 260: 250:rather than 219: 214: 210: 201: 190:(Alpha) and 172:Ernst Freese 169: 140: 117: 98: 67: 65: 2618:(1): 72–5. 2554:: 579–613. 2221:29 December 2132:PLOS Pathog 1781:28 December 1405:Mol. Cancer 973:transformed 965:mutagenesis 909:homolog in 895:homolog in 871:RIP causes 845:L. maculans 450:sickle cell 332:adaptations 188:transitions 164:Transitions 113:nucleotides 2893:Categories 2758:Transition 2077:PLOS Genet 1328:Proteomics 1068:References 1062:PAM matrix 1008:in 1876. 953:methylated 888:transition 851:pressure. 834:nucleotide 830:base pairs 799:methylated 753:transition 438:Hemoglobin 286:insertions 245:amino acid 234:hemoglobin 184:pyrimidine 115:code for. 109:pyrimidine 52:amino acid 48:nucleotide 2740:Insertion 2640:205011982 1758:(1): 187. 1354:1940-6029 975:into the 971:is first 937:parasites 867:Mechanism 860:N. crassa 357:chromatin 337:evolution 226:wild type 120:mutations 2904:Mutation 2745:Deletion 2726:Mutation 2632:11413469 2533:14143830 2484:18575630 2444:PLOS ONE 2425:12072568 2332:Genetics 2313:19589069 2268:17610516 2211:20471307 2164:21079787 2109:19714214 2054:11080216 2046:17823352 1999:12742061 1960:12207702 1915:25096512 1907:11359565 1866:23036409 1818:20854921 1769:eMedTV. 1638:12011146 1589:22140210 1581:14635100 1532:11409870 1496:23056252 1456:PLOS ONE 1437:21859464 1372:28188534 1305:11357144 1254:12068308 1152:16590424 1051:See also 941:missense 310:pre-mRNA 302:promoter 170:In 1959 128:mutagens 72:mutation 2568:2150906 2525:9346245 2475:2432034 2452:Bibcode 2393:Bibcode 2362:7896093 2353:1206250 2191:Bibcode 2155:2973834 2100:2725324 2026:Bibcode 2018:Science 1858:2960455 1689:9435331 1629:1735110 1540:2136834 1487:3463568 1464:Bibcode 1428:3170638 1411:: 101. 1363:5388446 1313:4337913 1285:Bibcode 1262:3071547 1234:Bibcode 1120:Bibcode 1010:Mitosis 1002:meiosis 996:History 813:meiotic 802:de novo 353:glycine 317:peptide 270:protein 132:UV rays 2691:(MeSH) 2665:  2638:  2630:  2593:  2566:  2531:  2523:  2482:  2472:  2423:  2416:124379 2413:  2360:  2350:  2311:  2266:  2209:  2162:  2152:  2107:  2097:  2052:  2044:  1997:  1958:  1913:  1905:  1864:  1856:  1816:  1687:  1636:  1626:  1587:  1579:  1538:  1530:  1494:  1484:  1435:  1425:  1370:  1360:  1352:  1342:  1311:  1303:  1277:Nature 1260:  1252:  1226:Nature 1150:  1143:222607 1140:  1091:17 May 1040:Watson 977:genome 856:et al. 419:gene. 394:cancer 388:Cancer 361:Cancer 326:Point 306:intron 248:valine 180:purine 176:purine 136:X-rays 105:purine 95:Causes 44:codons 2636:S2CID 2529:S2CID 2050:S2CID 1911:S2CID 1862:S2CID 1585:S2CID 1536:S2CID 1309:S2CID 1258:S2CID 1222:(PDF) 1044:Crick 917:masc1 818:. In 791:. 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Index

Base-pair substitution


codons
nucleotide
amino acid

mutation
DNA
RNA
synonymous mutations
frameshift mutations
DNA replication
purine
pyrimidine
nucleotides
mutations
DNA replication
mutagens
UV rays
X-rays
ultraviolet (UV) light

Transitions
Ernst Freese
purine
purine
pyrimidine
transitions
transversions

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