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Molecular genetics

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1072:. PCR is a technique that allows a target DNA sequence to be amplified, meaning even a tiny quantity of DNA from a crime scene can be extracted and replicated many times to provide a sufficient amount of material for analysis. Gel electrophoresis allows the DNA sequence to be separated based on size, and the pattern that is derived is known as DNA fingerprinting and is unique to each individual. This combination of molecular genetic techniques allows a simple DNA sequence to be extracted, amplified, analyzed and compared with others and is a standard technique used in forensics. 156: 721: 325: 1034:, which was adapted from the genome immune defense that is naturally occurring in bacteria. This technique relies on the protein Cas9 which allows scientists to make a cut in strands of DNA at a specific location, and it uses a specialized RNA guide sequence to ensure the cut is made in the proper location in the genome. Then scientists use DNAs repair pathways to induce changes in the genome; this technique has wide implications for disease treatment. 562:, made great contributions to the field of genetics through his various experiments with pea plants where he was able to discover the principles of inheritance such as recessive and dominant traits, without knowing what genes where composed of. In the mid 19th century, anatomist Walther Flemming, discovered what we now know as chromosomes and the separation process they undergo through mitosis. His work along with 3673: 3275: 2815: 437: 898: 785:. At cell division, cells must be able to copy its genome and pass it on to daughter cells. This is possible due to the double-stranded structure of DNA because one strand is complementary to its partner strand, and therefore each of these strands can act as a template strand for the formation of a new complementary strand. This is why the process of DNA replication is known as a semiconservative process. 989:
particular disease. DNA samples are obtained from participants and their genome can then be derived through lab machinery and quickly surveyed to compare participants and look for SNPs that can potentially be associated with the disease. This technique allows researchers to pinpoint genes and locations of interest in the human genome that they can then further study to identify that cause of the disease.
881: 539:, who was researching the composition of white blood cells, discovered and isolated a new molecule that he named nuclein from the cell nucleus, which would ultimately be the first discovery of the molecule DNA that was later determined to be the molecular basis of life. He determined it was composed of hydrogen, oxygen, nitrogen and phosphorus. Biochemist Albrecht Kosell identified nuclein as a 43: 3287: 2679: 582:, and using just this DNA were able to convert a harmless strain to virulence. They called the uptake, incorporation and expression of DNA by bacteria "transformation". This finding suggested that DNA is the genetic material of bacteria. Bacterial transformation is often induced by conditions of stress, and the function of transformation appears to be 988:
mapped the entire human genome and has made this approach more readily available and cost effective for researchers to implement. In order to conduct a GWAS researchers use two groups, one group that has the disease researchers are studying and another that acts as the control that does not have that
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Reverse genetics is the term for molecular genetics techniques used to determine the phenotype resulting from an intentional mutation in a gene of interest. The phenotype is used to deduce the function of the un-mutated version of the gene. Mutations may be random or intentional changes to the gene
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derived rules that offered evidence of DNA being the genetic material of life. These were "1) that the base composition of DNA varies between species and 2) in natural DNA molecules, the amount of adenine (A) is equal to the amount of thymine (T), and the amount of guanine (G) is equal to the amount
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can help determine the cause and tailor the cure for a disease they are afflicted with and potentially allow for more individualized treatment approaches which could be more effective. For example, certain genetic variations in individuals could make them more receptive to a particular drug while
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are assembled from protein and nucleic acid components (molecular morphogenesis). Furthermore, the role of chain terminating codons was elucidated. One noteworthy study was performed by Sydney Brenner and collaborators using "amber" mutants defective in the gene encoding the major head protein of
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A key goal of molecular genetics is to identify and study genetic mutations. Researchers search for mutations in a gene or induce mutations in a gene to link a gene sequence to a specific phenotype. Therefore molecular genetics is a powerful methodology for linking mutations to genetic conditions
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is an emerging field of science, and researcher are able to leverage molecular genetic technology to modify the DNA of organisms and create genetically modified and enhanced organisms for industrial, agricultural and medical purposes. This can be done through genome editing techniques, which can
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that links the molecular structure of a gene to the protein or RNA encoded by that segment of DNA and the functional expression of that protein within an organism. Today, through the application of molecular genetic techniques, genomics is being studied in many model organisms and data is being
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are the building blocks of DNA, each composed of a sugar molecule, a phosphate group and one of four nitrogenous bases: adenine, guanine, cytosine, and thymine. A single strand of DNA is held together by covalent bonds, while the two antiparallel strands are held together by hydrogen bonds
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of cytosine (C)." These rules, known as Chargaff's rules, helped to understand of molecular genetics. In 1953 Francis Crick and James Watson, building upon the X-ray crystallography work done by Rosalind Franklin and Maurice Wilkins, were able to derive the 3-D double helix structure of DNA.
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and is responsible for its genetic traits, function and development. The composition of DNA itself is an essential component to the field of molecular genetics; it is the basis of how DNA is able to store genetic information, pass it on, and be in a format that can be read and translated.
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bacteriophage T4. This study demonstrated the co-linearity of the gene with its encoded polypeptide, thus providing strong evidence for the "sequence hypothesis" that the amino acid sequence of a protein is specified by the nucleotide sequence of the gene determining the protein. 
745:. The genetic code is made of four interchangeable parts othe DNA molecules, called "bases": adenine, cytosine, uracil (in RNA; thymine in DNA), and guanine and is redundant, meaning multiple combinations of these base pairs (which are read in triplicate) produce the same amino acid. 1000:
allows researchers to analyze chromosomes during metaphase of mitosis, when they are in a condensed state. Chromosomes are stained and visualized through a microscope to look for any chromosomal abnormalities. This technique can be used to detect congenital genetic disorder such as
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For molecular genetics to develop as a discipline, several scientific discoveries were necessary.  The discovery of DNA as a means to transfer the genetic code of life from one cell to another and between generations was essential for identifying the molecule responsible for
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and paternity testing since these repeats are highly unique to individuals/families. a can also be used in constructing genetic maps and to studying genetic linkage to locate the gene or mutation responsible for specific trait or disease. Microsatellites can also be applied to
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and result in a gain of function by the host. Although these techniques have some inherent bias regarding the decision to link a phenotype to a particular function, it is much faster in terms of production than forward genetics because the gene of interest is already known.
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Avery OT, Macleod CM, McCarty M. Studies on the chemical nature of the substance inducing transformation of pneumococcal types: Induction of transformation by a desoxyribonucleic acid fraction isolated form pneumococcus type III. J Exp Med. 1944 Feb 1;79(2):137-58.
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between the nucleotide bases. Adenine binds with thymine and cytosine binds with guanine. It is these four base sequences that form the genetic code for all biological life and contains the information for all the proteins the organism will be able to synthesize.
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Molecular genetics is a scientific approach that utilizes the fundamentals of genetics as a tool to better understand the molecular basis of a disease and biological processes in organisms. Below are some tools readily employed by researchers in the field.
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other could have a higher risk of adverse reaction to treatments. So this information would allow researchers and clinicals to make the most informed decisions about treatment efficacy for patients rather than the standard trial and error approach.
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or single sequence repeats (SSRS) are short repeating segment of DNA composed to 6 nucleotides at a particular location on the genome that are used as genetic marker. Researchers can analyze these microsatellites in techniques such
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plays an essential role for criminal investigations through that use of various molecular genetic techniques. One common technique is DNA fingerprinting which is done using a combination of molecular genetic techniques like
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Molecular genetics has wide implications in medical advancement and understanding the molecular basis of a disease allows the opportunity for more effective diagnostic and therapies. One of the goals of the field is
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Phage and the Origins of Molecular Biology (2007) Edited by John Cairns, Gunther S. Stent, and James D. Watson, Cold Spring Harbor Laboratory of Quantitative Biology, Cold Spring Harbor, Long Island, New York
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plays a key role in the study of molecular genetics. The central dogma states that DNA replicates itself, DNA is transcribed into RNA, and RNA is translated into proteins. Along with the central dogma,
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molecules manifests as variation among organisms. Molecular genetics often applies an "investigative approach" to determine the structure and/or function of genes in an organism's genome using
681:(PCR) using Taq polymerase, invented by Mullis in 1985, enabled scientists to create millions of copies of a specific DNA sequence that could be used for transformation or manipulated using 3511: 2711: 859:. Forward genetics is an unbiased approach and often leads to many unanticipated discoveries, but may be costly and time consuming. Model organisms like the nematode worm 1625:
Sarabhai AS, Stretton AO, Brenner S, Bolle A (January 1964). "Co-linearity of the gene with the polypeptide chain". Nature. 201 (4914): 13–7. Bibcode:1964Natur.201...13S.
519:. It integrates these disciplines to explore things like genetic inheritance, gene regulation and expression, and the molecular mechanism behind various life processes. 2453:
Howard, Heidi C.; van El, Carla G.; Forzano, Francesca; Radojkovic, Dragica; Rial-Sebbag, Emmanuelle; de Wert, Guido; Borry, Pascal; Cornel, Martina C. (January 2018).
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that contributed substantially to molecular genetics and the origins of molecular biology during the period from about 1945 to 1970. The phage group took its name from
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This image shows an example of the central dogma using a DNA strand being transcribed then translated and showing important enzymes used in the processes.
3536: 468: 926:). Missense mutations may cause total loss of function or result in partial loss of function, known as a knockdown. Knockdown may also be achieved by 818: 677:, was pivotal to molecular genetic research and enabled scientists to begin conducting genetic screens to relate genotypic sequences to phenotypes. 2795: 2704: 2455:"One small edit for humans, one giant edit for humankind? Points and questions to consider for a responsible way forward for gene editing in humans" 3658: 2665: 2105: 1614: 1205: 535:
as the blueprint for life and breakthroughs in molecular genetics research came from the combined works of many scientists. In 1869, chemist
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first came up with the Chromosomal Theory of Inheritance, which helped explain some of the patterns Mendel had observed much earlier.
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Schneeberger, Korbinian (August 20, 2014). "Using next-generation sequencing to isolate mutant genes from forward genetic screens".
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and provided its name deoxyribonucleic acid (DNA). He continued to build on that by isolating the basic building blocks of DNA and
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is used in understanding how RNA is translated into proteins. Replication of DNA and transcription from DNA to mRNA occurs in the
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Bernstein H, Bernstein C, Michod RE (2018). Sex in microbial pathogens. Infection, Genetics and Evolution volume 57, pages 8-25.
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may be performed to determine if the phenotype results from more than one gene. The mutant genes are then characterized as
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and individuals are screened for the specific phenotype. Often, a secondary assay in the form of a selection may follow
3617: 2873: 1761: 1005:, identify gender in embryos, and diagnose some cancers that are caused by chromosome mutations such as translocations. 661:.  In 1972, Cohen and Boyer created the first recombinant DNA organism by inserting recombinant DNA plasmids into 3697: 2819: 682: 93: 3365: 3279: 2839: 1092: 1082: 840: 551:: adenine, guanine, thymine, cytosine. and uracil. His work on nucleotides earned him a Nobel Prize in Physiology. 232: 53: 3521: 3506: 2762: 1147: 1065: 830: 822: 678: 666: 454: 2510: 821:
where the desired phenotype is difficult to observe, for example in bacteria or cell cultures. The cells may be
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Gene editing allows scientists to alter/edit an organism's DNA. One way to due this is through the technique
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Alberts, Bruce; Johnson, Alexander; Lewis, Julian; Raff, Martin; Roberts, Keith; Walter, Peter (2002),
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Its unique structure allows DNA to store and pass on biological information across generations during
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Righetti, Pier Giorgio (June 24, 2005). "Electrophoresis: The march of pennies, the march of dimes".
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is a molecular genetics technique used to identify genes or genetic mutations that produce a certain
692: 2183:"Forward and Reverse Genetic Approaches for the Analysis of Vertebrate Development in the Zebrafish" 3632: 3622: 3582: 3482: 3462: 3355: 3350: 3046: 3041: 3019: 2965: 2737: 1122: 1069: 1018: 984:) to study genetic variations in populations that can be associated with a particular disease. The 966: 915: 650: 638: 396: 378: 343: 313: 270: 264: 255: 227: 1022:
involve modifying base pairings in a DNA sequence, or adding and deleting certain regions of DNA.
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are fields in biology that come out of the study of molecular genetics and the central dogma.
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DNA is a double stranded molecule, with each strand oriented in an antiparallel fashion.
602: 2326:"The construction of transgenic and gene knockout/knockin mouse models of human disease" 1967: 1563: 1500: 1449: 3627: 3567: 3467: 3213: 3164: 3124: 2777: 2625: 2592: 2568: 2535: 2487: 2454: 2358: 2325: 2301: 2276: 2252: 1717: 1302: 1269: 956: 923: 806: 709: 670: 590: 574:. Molecular genetics arose initially from studies involving genetic transformation in 563: 499:
The field of study is based on the merging of several sub-fields in biology: classical
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Jeremy W. Dale and Simon F. Park. 2010. Molecular Genetics of Bacteria, 5th Edition
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so that the mutants with the desired phenotype are selected from the non-mutants.
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caused by nucleotide substitution, a nucleotide addition or deletion to induce a
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Doyle, Alfred; McGarry, Michael P.; Lee, Nancy A.; Lee, James J. (April 2012).
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have been used successfully to study phenotypes resulting from gene mutations.
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Hardy, Serge; Legagneux, Vincent; Audic, Yann; Paillard, Luc (October 2010).
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in 2001. The culmination of all of those discoveries was a new field called
578:. In 1944 Avery, McLeod and McCarthy isolated DNA from a virulent strain of 260: 2634: 2577: 2496: 2367: 2310: 2261: 2216: 2159: 1884:"What is bioinformatics? A proposed definition and overview of the field". 1703: 1638: 1587: 1547: 1524: 1441: 1406: 1311: 2678: 3602: 3572: 3416: 3406: 3334: 3087: 3082: 2975: 1433: 1048: 750: 742: 696: 575: 571: 559: 319: 202: 192: 147: 1897: 641:. Restriction enzymes were used to linearize DNA for separation by 3193: 3168: 3143: 3139: 3119: 2932: 2292: 2015: 1737: 980:(GWAS) are a technique that relies on single nucleotide polymorphisms ( 810: 658: 485: 1508: 673:
techniques in the late 1970s, first by Maxam and Gilbert, and then by
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where the gene is not expressed and a loss of function results (e.g.
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that may aid the search for treatments of various genetics diseases.
212: 187: 2831: 2133: 669:, and paved the way for molecular cloning.  The development of 1179:(Fall 2013 ed.), Metaphysics Research Lab, Stanford University 691:), followed by the eventual sequencing of the human genome via the 3206: 2652:
Sites and databases related to genetics, cytogenetics and oncology
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separation. A decade later, the first whole genome was sequenced (
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that addresses how differences in the structures or expression of
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Mutants exhibiting the phenotype of interest are isolated and a
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Atlas of Genetics and Cytogenetics in Oncology and Haematology
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Lamm, Ehud; Harman, Oren; Veigl, Sophie Juliane (June 2020).
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allowed for the identification of specific DNA segments via
3303: 1836:"Timeline: Organisms that have had their genomes sequenced" 1659:"Restriction Enzymes Spotlight | Learn Science at Scitable" 1485:"Regularities in the Composition of Pentose Nucleic Acids" 712:, and links genetic mutations on an evolutionary scale. 741:
while translation from RNA to proteins occurs in the
2092:, John Wiley & Sons, Ltd, 2016, pp. 27–57, 2088:"Selection versus Screening in Directed Evolution", 3646: 3545: 3496: 3440: 3379: 3232: 3152: 3107: 3100: 3055: 2942: 2899: 2892: 2776: 2728: 67:. Unsourced material may be challenged and removed. 30:For a non-technical introduction to the topic, see 2534:Goetz, Laura H.; Schork, Nicholas J. (June 2018). 601:was an informal network of biologists centered on 1718:"Southern Blotting | MyBioSource Learning Center" 2181:Lawson, Nathan D.; Wolfe, Scot A. (2011-07-19). 1326:"The Nobel Prize in Physiology or Medicine 1910" 901:Diagram illustrating the development process of 27:Scientific study of genes at the molecular level 2232:"Forward and reverse mutagenesis in C. elegans" 1459: 1457: 1375:"Walther Flemming: pioneer of mitosis research" 637:by Arber and Linn in 1969 opened the field of 3319: 2847: 2705: 1546:Watson, J. D.; Crick, F. H. C. 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Molecular Cell Biology 1221: 905:vaccine by reverse genetics techniques 809:, random mutations are generated with 969:to study comparisons between groups. 700:collected in computer databases like 7: 1245:"Mutation, Repair and Recombination" 65:adding citations to reliable sources 3286: 2041:"The Structure and Function of DNA" 1143:Timeline of the history of genetics 847:(resulting in a gain of function), 657:molecule and first recombinant DNA 2459:European Journal of Human Genetics 1886:Methods of Information in Medicine 884:An example of forward genetics in 25: 3130:Post-transcriptional modification 851:(showing a loss of function), or 811:mutagens (chemicals or radiation) 3672: 3671: 3285: 3274: 3273: 2814: 2813: 2677: 2552:10.1016/j.fertnstert.2018.05.006 2277:"Reverse genetics in eukaryotes" 1200:(Sixth ed.). New York, NY. 1088:DNA damage (naturally occurring) 910:of interest. Mutations may be a 765:is made up by its entire set of 436: 435: 324: 323: 154: 41: 3135:Post-translational modification 978:Genome-wide association studies 973:Genome-wide association studies 52:needs additional citations for 2143:11858/00-001M-0000-0024-CF80-4 1920:"The Central Dogma | Protocol" 888:(a nematode) using mutagenesis 1: 3257:Post-translational regulation 2609:10.1080/20961790.2018.1489445 1373:Paweletz, N. (January 2001). 1198:Molecular biology of the cell 1196:Alberts, Bruce (2014-11-18). 1175:, in Zalta, Edward N. 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1864:EMBL-EBI Train online 1113:Genetic recombination 1045:personalized medicine 1038:Personalized medicine 900: 883: 827:antibiotic resistance 723: 501:Mendelian inheritance 422:Personalized medicine 416:Personalized medicine 281:Quantitative genetics 276:Mendelian inheritance 3553:Behavioural genetics 3252:Post-transcriptional 2686:at Wikimedia Commons 2020:www.ncbi.nlm.nih.gov 1434:10.1084/jem.79.2.137 1249:Genomes. 2nd edition 1173:"Molecular Genetics" 1171:Waters, Ken (2013), 986:Human Genome Project 871:, and the zebrafish 841:complementation test 693:Human Genome Project 651:hybridization probes 554:In the early 1900s, 344:Branches of genetics 76:"Molecular genetics" 61:improve this article 18:Molecular geneticist 3633:Population genomics 3623:Molecular evolution 3583:Genetic engineering 3047:Histone methylation 2738:Gel electrophoresis 2593:"Forensic genetics" 2330:Transgenic Research 2281:Biology of the Cell 1898:10.1055/s-008-38405 1860:"What is genomics?" 1564:1953Natur.171..737W 1501:1954Natur.173.1037E 1495:(4413): 1037–1038. 1123:History of genetics 1070:gel electrophoresis 1019:Genetic engineering 1014:Genetic engineering 1009:Modern applications 967:population genetics 916:frameshift mutation 639:genetic engineering 629:The isolation of a 314:Genetic engineering 271:Population genetics 142:Part of a series on 3698:Molecular genetics 3593:Genetic monitoring 2758:Restriction digest 2721:Molecular genetics 2684:Molecular genetics 2293:10.1042/BC20100038 2187:Developmental Cell 1118:Genomic imprinting 962:DNA fingerprinting 907: 890: 726: 580:S. pneumoniae 482:Molecular genetics 286:Molecular genetics 245:History and topics 3685: 3684: 3608:He Jiankui affair 3598:Genetic genealogy 3588:Genetic diversity 3517:the British Isles 3422:Genetic variation 3301: 3300: 3280:Molecular biology 3265: 3264: 3219:Mass spectrometry 3096: 3095: 2863:Molecular biology 2829: 2828: 2743:Molecular cloning 2682:Media related to 2666:978-0-470-74184-9 2107:978-3-527-65546-5 2047:, Garland Science 1615:978-0-87969-800-3 1558:(4356): 737–738. 1509:10.1038/1731037a0 1207:978-0-8153-4432-2 1155:Sources and notes 1061:Forensic genetics 1056:Forensic genetics 912:missense mutation 825:using a gene for 647:Southern blotting 619:DNA recombination 547:; made up of the 531:The discovery of 509:molecular biology 479: 478: 208:Genetic variation 137: 136: 129: 111: 16:(Redirected from 3705: 3675: 3674: 3638:Reverse genetics 3613:Medical genetics 3328: 3321: 3314: 3305: 3289: 3288: 3277: 3276: 3210: 3105: 2958: 2953: 2897: 2856: 2849: 2842: 2833: 2817: 2816: 2753:Promoter bashing 2714: 2707: 2700: 2691: 2681: 2639: 2638: 2628: 2588: 2582: 2581: 2571: 2531: 2525: 2524: 2522: 2521: 2507: 2501: 2500: 2490: 2450: 2444: 2443: 2441: 2440: 2426: 2420: 2419: 2417: 2416: 2402: 2396: 2395: 2393: 2392: 2382:"Microsatellite" 2378: 2372: 2371: 2361: 2321: 2315: 2314: 2304: 2272: 2266: 2265: 2255: 2227: 2221: 2220: 2202: 2178: 2172: 2171: 2145: 2117: 2111: 2110: 2085: 2079: 2078: 2076: 2075: 2061: 2055: 2054: 2053: 2052: 2036: 2030: 2029: 2027: 2026: 2012: 2006: 2005: 2003: 2002: 1988: 1982: 1981: 1979: 1978: 1964: 1958: 1957: 1955: 1954: 1940: 1934: 1933: 1931: 1930: 1916: 1910: 1909: 1881: 1875: 1874: 1872: 1871: 1856: 1850: 1849: 1847: 1846: 1832: 1826: 1825: 1823: 1822: 1807: 1801: 1800: 1798: 1797: 1783: 1777: 1776: 1774: 1773: 1758: 1752: 1751: 1749: 1748: 1734: 1728: 1727: 1725: 1724: 1714: 1708: 1707: 1679: 1673: 1672: 1670: 1669: 1655: 1649: 1631:10.1038/201013a0 1623: 1617: 1606: 1600: 1599: 1572:10.1038/171737a0 1543: 1537: 1536: 1480: 1471: 1461: 1452: 1425: 1419: 1418: 1391:10.1038/35048077 1370: 1364: 1363: 1361: 1360: 1346: 1340: 1339: 1337: 1336: 1322: 1316: 1315: 1305: 1265: 1259: 1258: 1257: 1256: 1240: 1234: 1233: 1227: 1219: 1193: 1187: 1186: 1185: 1184: 1168: 928:RNA interference 893:Reverse genetics 865:, the fruit fly 799:Forward genetics 794:Forward genetics 757:Structure of DNA 735:the genetic code 675:Frederick Sanger 505:cellular biology 471: 464: 457: 444: 439: 438: 336:Medical genetics 332: 327: 326: 158: 139: 132: 125: 121: 118: 112: 110: 69: 45: 37: 21: 3713: 3712: 3708: 3707: 3706: 3704: 3703: 3702: 3688: 3687: 3686: 3681: 3663: 3642: 3541: 3532:the Middle East 3498:Archaeogenetics 3492: 3436: 3375: 3337: 3332: 3302: 3297: 3261: 3234:Gene regulation 3228: 3204: 3165:Model organisms 3148: 3125:Cell signalling 3092: 3051: 2956: 2951: 2938: 2909:DNA replication 2888: 2865: 2860: 2830: 2825: 2805: 2786:Gene sequencing 2772: 2724: 2718: 2674: 2648: 2646:Further reading 2643: 2642: 2590: 2589: 2585: 2533: 2532: 2528: 2519: 2517: 2515:medlineplus.gov 2509: 2508: 2504: 2452: 2451: 2447: 2438: 2436: 2428: 2427: 2423: 2414: 2412: 2404: 2403: 2399: 2390: 2388: 2380: 2379: 2375: 2323: 2322: 2318: 2287:(10): 561–580. 2274: 2273: 2269: 2229: 2228: 2224: 2180: 2179: 2175: 2134:10.1038/nrg3745 2128:(10): 662–676. 2119: 2118: 2114: 2108: 2087: 2086: 2082: 2073: 2071: 2063: 2062: 2058: 2050: 2048: 2038: 2037: 2033: 2024: 2022: 2014: 2013: 2009: 2000: 1998: 1990: 1989: 1985: 1976: 1974: 1966: 1965: 1961: 1952: 1950: 1942: 1941: 1937: 1928: 1926: 1918: 1917: 1913: 1883: 1882: 1878: 1869: 1867: 1858: 1857: 1853: 1844: 1842: 1834: 1833: 1829: 1820: 1818: 1809: 1808: 1804: 1795: 1793: 1785: 1784: 1780: 1771: 1769: 1760: 1759: 1755: 1746: 1744: 1736: 1735: 1731: 1722: 1720: 1716: 1715: 1711: 1681: 1680: 1676: 1667: 1665: 1657: 1656: 1652: 1624: 1620: 1607: 1603: 1545: 1544: 1540: 1482: 1481: 1474: 1462: 1455: 1426: 1422: 1372: 1371: 1367: 1358: 1356: 1348: 1347: 1343: 1334: 1332: 1324: 1323: 1319: 1267: 1266: 1262: 1254: 1252: 1242: 1241: 1237: 1220: 1208: 1195: 1194: 1190: 1182: 1180: 1170: 1169: 1162: 1157: 1152: 1078: 1058: 1040: 1028: 1016: 1011: 995: 975: 957:Microsatellites 954: 952:Microsatellites 945: 895: 886:C. elegans 796: 791: 759: 718: 665:, now known as 655:recombinant DNA 643:electrophoresis 611:DNA replication 529: 494:genetic screens 484:is a branch of 475: 434: 427: 426: 417: 409: 408: 407: 406: 357: 349: 348: 340: 318: 299: 291: 290: 246: 238: 237: 224: 223: 222: 166: 133: 122: 116: 113: 70: 68: 58: 46: 35: 28: 23: 22: 15: 12: 11: 5: 3711: 3709: 3701: 3700: 3690: 3689: 3683: 3682: 3680: 3679: 3668: 3665: 3664: 3662: 3661: 3656: 3650: 3648: 3644: 3643: 3641: 3640: 3635: 3630: 3628:Plant genetics 3625: 3620: 3615: 3610: 3605: 3600: 3595: 3590: 3585: 3580: 3575: 3570: 3568:Genome editing 3565: 3560: 3555: 3549: 3547: 3546:Related topics 3543: 3542: 3540: 3539: 3534: 3529: 3524: 3519: 3514: 3509: 3503: 3501: 3494: 3493: 3491: 3490: 3485: 3480: 3475: 3470: 3468:Immunogenetics 3465: 3460: 3455: 3450: 3444: 3442: 3438: 3437: 3435: 3434: 3429: 3424: 3419: 3414: 3409: 3404: 3399: 3394: 3389: 3383: 3381: 3380:Key components 3377: 3376: 3374: 3373: 3368: 3363: 3358: 3353: 3348: 3342: 3339: 3338: 3333: 3331: 3330: 3323: 3316: 3308: 3299: 3298: 3296: 3295: 3283: 3270: 3267: 3266: 3263: 3262: 3260: 3259: 3254: 3249: 3244: 3238: 3236: 3230: 3229: 3227: 3226: 3221: 3216: 3214:DNA microarray 3211: 3201: 3200: 3187: 3186: 3185: 3180: 3172: 3162: 3156: 3154: 3150: 3149: 3147: 3146: 3137: 3132: 3127: 3122: 3117: 3111: 3109: 3102: 3098: 3097: 3094: 3093: 3091: 3090: 3085: 3080: 3075: 3070: 3065: 3059: 3057: 3053: 3052: 3050: 3049: 3044: 3039: 3038: 3037: 3032: 3022: 3017: 3012: 3007: 3002: 3001: 3000: 2995: 2990: 2980: 2979: 2978: 2973: 2962: 2961: 2960: 2959: 2954: 2946: 2944: 2940: 2939: 2937: 2936: 2926: 2916: 2905: 2903: 2894: 2890: 2889: 2887: 2886: 2881: 2876: 2870: 2867: 2866: 2861: 2859: 2858: 2851: 2844: 2836: 2827: 2826: 2824: 2823: 2810: 2807: 2806: 2804: 2803: 2798: 2793: 2788: 2782: 2780: 2778:Bioinformatics 2774: 2773: 2771: 2770: 2765: 2760: 2755: 2750: 2745: 2740: 2734: 2732: 2726: 2725: 2719: 2717: 2716: 2709: 2702: 2694: 2688: 2687: 2673: 2672:External links 2670: 2669: 2668: 2658: 2647: 2644: 2641: 2640: 2603:(2): 103–104. 2583: 2546:(6): 952–963. 2526: 2502: 2445: 2434:www.nature.com 2421: 2397: 2373: 2336:(2): 327–349. 2316: 2267: 2222: 2173: 2112: 2106: 2080: 2069:www.nature.com 2056: 2031: 2007: 1983: 1968:"Genetic Code" 1959: 1948:www.atdbio.com 1935: 1911: 1876: 1851: 1827: 1802: 1778: 1753: 1729: 1709: 1690:(1–2): 24–40. 1674: 1663:www.nature.com 1650: 1618: 1601: 1538: 1472: 1453: 1420: 1365: 1354:www.nature.com 1341: 1330:NobelPrize.org 1317: 1280:(2): 291–296. 1260: 1235: 1206: 1188: 1159: 1158: 1156: 1153: 1151: 1150: 1145: 1140: 1135: 1130: 1125: 1120: 1115: 1110: 1105: 1100: 1095: 1090: 1085: 1079: 1077: 1074: 1057: 1054: 1039: 1036: 1027: 1024: 1015: 1012: 1010: 1007: 994: 991: 974: 971: 953: 950: 944: 941: 934:) to create a 894: 891: 807:genetic screen 795: 792: 790: 787: 761:An organism's 758: 755: 717: 714: 710:bioinformatics 671:DNA sequencing 607:bacteriophages 591:Erwin Chargaff 564:Theodor Boveri 528: 525: 477: 476: 474: 473: 466: 459: 451: 448: 447: 446: 445: 429: 428: 425: 424: 418: 415: 414: 411: 410: 405: 404: 399: 394: 391: 386: 384:Immunogenetics 381: 376: 371: 366: 360: 359: 358: 355: 354: 351: 350: 347: 346: 339: 338: 333: 316: 311: 309:DNA sequencing 306: 300: 297: 296: 293: 292: 289: 288: 283: 278: 273: 268: 258: 253: 247: 244: 243: 240: 239: 236: 235: 230: 221: 220: 215: 210: 205: 200: 195: 190: 185: 180: 175: 169: 168: 167: 165:Key components 164: 163: 160: 159: 151: 150: 144: 143: 135: 134: 49: 47: 40: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3710: 3699: 3696: 3695: 3693: 3678: 3670: 3669: 3666: 3660: 3657: 3655: 3652: 3651: 3649: 3645: 3639: 3636: 3634: 3631: 3629: 3626: 3624: 3621: 3619: 3616: 3614: 3611: 3609: 3606: 3604: 3601: 3599: 3596: 3594: 3591: 3589: 3586: 3584: 3581: 3579: 3576: 3574: 3571: 3569: 3566: 3564: 3561: 3559: 3556: 3554: 3551: 3550: 3548: 3544: 3538: 3535: 3533: 3530: 3528: 3525: 3523: 3520: 3518: 3515: 3513: 3510: 3508: 3505: 3504: 3502: 3499: 3495: 3489: 3486: 3484: 3481: 3479: 3476: 3474: 3471: 3469: 3466: 3464: 3461: 3459: 3456: 3454: 3451: 3449: 3446: 3445: 3443: 3439: 3433: 3430: 3428: 3425: 3423: 3420: 3418: 3415: 3413: 3410: 3408: 3405: 3403: 3400: 3398: 3395: 3393: 3390: 3388: 3385: 3384: 3382: 3378: 3372: 3369: 3367: 3364: 3362: 3359: 3357: 3354: 3352: 3349: 3347: 3344: 3343: 3340: 3336: 3329: 3324: 3322: 3317: 3315: 3310: 3309: 3306: 3294: 3293: 3284: 3282: 3281: 3272: 3271: 3268: 3258: 3255: 3253: 3250: 3248: 3245: 3243: 3240: 3239: 3237: 3235: 3231: 3225: 3224:Lab-on-a-chip 3222: 3220: 3217: 3215: 3212: 3208: 3203: 3202: 3199: 3198:Radioactivity 3195: 3191: 3188: 3184: 3181: 3179: 3176: 3175: 3173: 3170: 3166: 3163: 3161: 3158: 3157: 3155: 3151: 3145: 3141: 3138: 3136: 3133: 3131: 3128: 3126: 3123: 3121: 3118: 3116: 3115:Cultured meat 3113: 3112: 3110: 3106: 3103: 3099: 3089: 3086: 3084: 3081: 3079: 3076: 3074: 3071: 3069: 3066: 3064: 3061: 3060: 3058: 3054: 3048: 3045: 3043: 3040: 3036: 3035:trp repressor 3033: 3031: 3030:lac repressor 3028: 3027: 3026: 3023: 3021: 3018: 3016: 3013: 3011: 3008: 3006: 3003: 2999: 2996: 2994: 2991: 2989: 2986: 2985: 2984: 2981: 2977: 2974: 2972: 2969: 2968: 2967: 2964: 2963: 2955: 2950: 2949: 2948: 2947: 2945: 2941: 2934: 2930: 2927: 2924: 2920: 2919:Transcription 2917: 2914: 2910: 2907: 2906: 2904: 2902: 2901:Central dogma 2898: 2895: 2891: 2885: 2882: 2880: 2877: 2875: 2872: 2871: 2868: 2864: 2857: 2852: 2850: 2845: 2843: 2838: 2837: 2834: 2822: 2821: 2812: 2811: 2808: 2802: 2799: 2797: 2794: 2792: 2789: 2787: 2784: 2783: 2781: 2779: 2775: 2769: 2768:Southern blot 2766: 2764: 2761: 2759: 2756: 2754: 2751: 2749: 2748:Northern blot 2746: 2744: 2741: 2739: 2736: 2735: 2733: 2731: 2727: 2722: 2715: 2710: 2708: 2703: 2701: 2696: 2695: 2692: 2685: 2680: 2676: 2675: 2671: 2667: 2663: 2659: 2657: 2653: 2650: 2649: 2645: 2636: 2632: 2627: 2622: 2618: 2614: 2610: 2606: 2602: 2598: 2594: 2587: 2584: 2579: 2575: 2570: 2565: 2561: 2557: 2553: 2549: 2545: 2541: 2537: 2530: 2527: 2516: 2512: 2506: 2503: 2498: 2494: 2489: 2484: 2480: 2476: 2472: 2468: 2464: 2460: 2456: 2449: 2446: 2435: 2431: 2425: 2422: 2411: 2407: 2401: 2398: 2387: 2383: 2377: 2374: 2369: 2365: 2360: 2355: 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864: 863: 858: 854: 850: 846: 842: 837: 835: 832: 828: 824: 820: 816: 812: 808: 804: 800: 793: 788: 786: 784: 783:cell division 779: 776: 771: 768: 764: 756: 754: 752: 748: 744: 740: 736: 731: 730:central dogma 722: 716:Central dogma 715: 713: 711: 707: 703: 698: 694: 690: 689: 684: 680: 676: 672: 668: 664: 660: 656: 652: 648: 644: 640: 636: 632: 627: 624: 621:, and on how 620: 616: 612: 608: 604: 600: 595: 592: 587: 585: 581: 577: 573: 567: 565: 561: 557: 556:Gregor Mendel 552: 550: 546: 542: 538: 534: 526: 524: 520: 518: 517:biotechnology 514: 510: 506: 502: 497: 495: 491: 487: 483: 472: 467: 465: 460: 458: 453: 452: 450: 449: 443: 433: 432: 431: 430: 423: 420: 419: 413: 412: 403: 400: 398: 395: 392: 390: 387: 385: 382: 380: 377: 375: 372: 370: 367: 365: 362: 361: 353: 352: 345: 342: 341: 337: 334: 330: 321: 317: 315: 312: 310: 307: 305: 302: 301: 295: 294: 287: 284: 282: 279: 277: 274: 272: 269: 266: 262: 259: 257: 254: 252: 249: 248: 242: 241: 234: 231: 229: 226: 225: 219: 216: 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Genetics

Chromosome
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