Sexual selection

Definition

The evolutionary process by which traits that enhance an individual's ability to obtain a mate are favored by natural selection.

Etymology

Coined by Charles Darwin in his 1871 book *The Descent of Man*

Example

Sexual selection explains why male peacocks have elaborate tail feathers, which attract females.

Related Terms

• Mate choice
• Intrasexual selection
• Intersexual selection

Usage Notes

Sexual selection can lead to the evolution of traits that are not necessarily beneficial for survival, but are advantageous for attracting mates.