The concepts of mate choice and competition over eligible members of the opposite sex in animals and perhaps humans.
8
votes
3answers
918 views
Why are not all species hermaphrodites?
If a hermaphrodite animal (like slug, snail, etc) finds a partner they can mate immediately.
If another animal with "normal" reproduction (lets say a mouse) finds a partner they can only mate if they ...
31
votes
2answers
587 views
Is there any evidence that sexual selection may lead to extinction of species?
Darwin suggested that sexual selection, especially by female choice, may counter natural selection. Theoretical models, such as a Fisherian runaway process, suggest that evolution of preference and ...
1
vote
1answer
124 views
Evolutionary speaking, what is the purpose of girls masturbating?
In males they expel sperm in semen, but females orgasm with clitoral stimulation, and the clitoris has absolutely no evolutionary, sexually reproductive, or otherwise purpose outside of sexual ...
4
votes
1answer
202 views
Why does sexual selection evolve beautiful features?
First question here. I have a very raw understanding of sexual selection:
Say a group of females of a certain species "likes" some feature of a certain groups of males; by "like" I mean some ...
-2
votes
1answer
56 views
Do women have greater reproductive success than men? [duplicate]
What proportion of men who go through their whole lives and never find a mate at all, and what proportion of women do? And is the proportion of men greater than the proportion of women?
1
vote
0answers
32 views
Are there any mammals in which polyspermy produces viable zygotes?
Are there any mammals in which polyspermy produces viable zygotes? In the wikipedia page it is mentioned that there is a delicate equilibrium between female defenses against many sperms, which ...
7
votes
1answer
485 views
Why is the Kakapo more attracted to humans than its own kind?
The Kakapo can be seen in this video by BBC. It is said that the species is strongly sexually attracted to humans. Why could this be the case?
6
votes
3answers
320 views
Do men have more extreme variations than women?
This question was considered unsuitable for Skeptics and I think it is more suited to BIology than Cognitive Sciences
I was reading this article which I found interesting. It is not supported with ...
19
votes
2answers
263 views
Is there evidence that some non-human species perform sexual selection based primarily on intelligence? How do they do this?
I'm a biology amateur, but it seems like sexual selection is almost always performed based on physical characteristics, the outcome of physical contests, or some sort elaborate courtship. But do any ...
