The Descent of Man applies evolutiory theory to human evolution, and
details Darwin's theory of sexual selection, a form of biological
adaptation distinct from, yet interconnected with, tural selection.This
book presents a full explation of Darwin's ideas about sexual selection,
including his belief that many important characteristics of human beings
and animals have emerged in response to competition for mates. The
Descent of Man played a major role in the emergence of social Darwinism.