Sexual dimorphism
From The Art and Popular Culture Encyclopedia
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"It is strongly to be expected on evolutionary grounds that, where the sexes differ, it should be the males that advertise and the females that are drab. Modern western man is undoubtedly exceptional in this respect." --The Selfish Gene |
Illustration: Toulouse-Lautrec wearing Jane Avril's Feathered Hat and Boa (ca. 1892), photo Maurice Guibert.
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Sexual dimorphism is the systematic difference in form between individuals of different sex in the same species. Examples include size, color, and the presence or absence of parts of the body used in courtship displays or fights, such as ornamental feathers, horns, antlers or tusks.
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See also
- Primary sex characteristic
- Secondary sex characteristic
- Bateman's principle
- Digit ratio
- Gender differences
- Sex differences in humans
- List of homologues of the human reproductive system
- Operational sex ratio
- Sexual differentiation
- Sexually dimorphic nucleus
- Sexual dimorphism measures
- Sexual dimorphism in non-human primates
- Sexual reproduction
- Sexual selection
- Sex-limited genes
- Sex differences in sensory systems
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