Secondary sex characteristic
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| + | '''Secondary sex characteristics''' are traits that distinguish the two [[sex]]es of a species, but that are not directly part of the [[reproductive system]]. Some have argued that in general they [[evolution|evolved]] to give an individual an advantage over its rivals in [[courtship]]. They are opposed to the [[primary sexual characteristics]]: the [[sex organ]]s. | ||
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| + | Well known secondary sex characteristics include facial hairs of male [[lion]]s, and long feathers of [[peacock]]. In humans most visible are [[breasts]] of females and [[beard]] and [[moustache]] of males. Secondary sex characteristics include the tusks of sea lions, the plumage of many male birds, the chemical indicators of many insects, etc. | ||
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Secondary sex characteristics are traits that distinguish the two sexes of a species, but that are not directly part of the reproductive system. Some have argued that in general they evolved to give an individual an advantage over its rivals in courtship. They are opposed to the primary sexual characteristics: the sex organs.
Well known secondary sex characteristics include facial hairs of male lions, and long feathers of peacock. In humans most visible are breasts of females and beard and moustache of males. Secondary sex characteristics include the tusks of sea lions, the plumage of many male birds, the chemical indicators of many insects, etc.
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Secondary sex characteristic" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.
