3 ms·
I think that's part of the origin of human evolution (this started happening after women started having hidden estrus).
by daniel-cussen 16y ago
I think that's part of the origin of human evolution (this started happening after women started having hidden estrus).
- ithkuil 16y agoor seeing the same thing the other way around: hidden estrus was evolved in order to get more for less Schroder, Inge. "Concealed Ovulation and Clandestine Copulation: a Female Contribution to Human Evolution." Ethology and Sociobiology 14.6 (1993): 381-89.