sexually antagonistic genes
Mar. 12th, 2010 01:37 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
guslThe 2nd:4th digit ratio, sexual dimorphism, population differences, and reproductive success - evidence for sexually antagonistic genes?
<< The selective consequences of sexually antagonistic genes are best seen by comparing their sex-dependent effects on reproductive success. In humans, the mean number of children per adult ... underlying biological factors such as sperm numbers, hormonal levels, and behavioral patterns still may account for some of the variance in offspring number within populations >>
<< There is evidence that behavioral and physiological advantages accrue to the male fetus when exposed to high testosterone and low estrogen levels and to the female fetus when exposed to low testosterone and high estrogen. Our Finnish sample had very low male 2D:4D, and it is known that Finnish men have sperm counts that are nearly double that of men worldwide. >>
<< The selective consequences of sexually antagonistic genes are best seen by comparing their sex-dependent effects on reproductive success. In humans, the mean number of children per adult ... underlying biological factors such as sperm numbers, hormonal levels, and behavioral patterns still may account for some of the variance in offspring number within populations >>
<< There is evidence that behavioral and physiological advantages accrue to the male fetus when exposed to high testosterone and low estrogen levels and to the female fetus when exposed to low testosterone and high estrogen. Our Finnish sample had very low male 2D:4D, and it is known that Finnish men have sperm counts that are nearly double that of men worldwide. >>