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Relative direction and chirality are distinct concepts. Relative direction is from the point of view of the observer; a completely symmetric object has a left side and a right side, from the observer's point of view, if the top and bottom and direction of observation are defined. Chirality, however,
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include equal numbers of right- and left-sided individuals, and are generally more symmetric than other families.
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Schematic illustration of the two strike-slip fault types. The view is of the Earth's surface from above.
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178:(left-handed). Very few species show an even mixture of dextral and sinistral individuals (for example,
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Chapleau, Francois & Amaoka, Kunio (1998). Paxton, J.R. & Eschmeyer, W.N. (eds.).
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Schilthuizen M. & Davison A. (2005). "The convoluted evolution of snail chirality".
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refer to the horizontal component of the movement of blocks on either side of a
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Over 90% of gastropod species have shells in which the direction of the coil is
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or right-eyed flatfish), and in others, they are always on the left (
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is observer-independent: no matter how one looks at a right-hand
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129:(now extinct) found mainly in the Northern Hemisphere.
68:). Other disciplines use different terms (such as
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92:) or simply use left and right (as in
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261:or the sense of movement within a
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399:Foundation of Structural Geology
300:Left and right (disambiguation)
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285:Helicity (disambiguation)
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440:Orientation (geometry)
373:Encyclopedia of Fishes
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27:Two types of chirality
357:Amphidromus perversus
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181:Amphidromus perversus
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310:Terms of orientation
396:Park, R.G. (2004).
332:Naturwissenschaften
276:Dexter and sinister
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32:dexter and sinister
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60:words for "left" (
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197:European flounder
137:Neptunea despecta
122:Neptunea angulata
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429:Categories
317:References
295:Laterality
263:shear zone
161:gastropods
145:Gastropods
50:handedness
435:Chirality
251:sinistral
217:sinistral
176:sinistral
165:chirality
127:sea snail
82:clockwise
78:chemistry
46:chirality
38:Sinistral
305:Symmetry
280:heraldry
269:See also
209:flatfish
201:flatfish
188:Flatfish
62:sinister
255:dextral
247:geology
227:Geology
213:dextral
172:dextral
108:Biology
94:anatomy
90:physics
70:dextro-
42:dextral
18:Dextral
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157:shells
132:Right:
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