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Copulation

Copulation

sexual contact of a male with a receptive female usually followed by emission of sperm. Limited to non-human species. For humans use coitus.


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Do chromosomses ever get competitive?

... it is said that the x-sperm cell is faster than the y-sperm cell, so that whether y or x chromosome fertilizes the egg depends on the time of copulation with respect to ovulation.

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by Fearnot
Fri Aug 09, 2013 4:15 pm
 
Forum: Cell Biology
Topic: Do chromosomses ever get competitive?
Replies: 9
Views: 4295

Sexual orientation, hard wired in the brain?

... kitten, all neutered as kittens. They are all adults now. Observation: On rare occasion, the males will attempt to mount the female. There is no copulation taking place (in fact the males look rather clueless, as if not knowing what to do next), but the motions of grabbing the female by the scruff ...

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by Jobe
Thu May 17, 2012 2:15 pm
 
Forum: Human Biology
Topic: Sexual orientation, hard wired in the brain?
Replies: 0
Views: 1168

The Keyhole Paradox: Challenging universal common descent.

... or barb-ready state is simply not compatible with the non-barb-receptive/non-barbed state. On one hand, if you have a barbed penis attempting copulation with a non-barbed vagina, you have a whole host of issues that are not present in non-barbed/non-barbed-compatible copulation, for obvious ...

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by irtree
Tue Feb 07, 2012 3:44 am
 
Forum: Evolution
Topic: The Keyhole Paradox: Challenging universal common descent.
Replies: 5
Views: 3763

How to Obtain Dinosaurs

... laboratory workers on plants, bees. Remora encroached entirely in the sex organs of bigger fish or bathing terrestrial mammals is seen. The very copulation, at the giant bodies, with these enormous tails, would be difficult on dry territory. Why cannot now the shores of the water basins maintain ...

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by enarees
Tue Jan 05, 2010 5:38 pm
 
Forum: Evolution
Topic: How to Obtain Dinosaurs
Replies: 12
Views: 10694

"irresistible lust"

It would be releated to the organism's response. As humans mating or copulation biologically is needed for the perpetuation of the species. By Maslow's hierarchy of needs, sex is a physiological need. Remeber one of the organism's basic attributes of life ...

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by mcar
Thu Jan 24, 2008 1:51 pm
 
Forum: Human Biology
Topic: "irresistible lust"
Replies: 9
Views: 5147
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