Secondary sexual 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.
Subcategories
This category has the following 3 subcategories, out of 3 total.
Pages in category "Secondary sexual characteristics"
The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes.