They found 61 % fewer heart attacks in women of reproductive age with high estrogen levels compared to males of the same age. (jeffreydachmd.com)
A hybrid female should reach reproductive age in 10 to 15 years. (discovermagazine.com)
It should be kept in mind that evolution is driven by natural selection, that is, it is driven by certain members of the population dying before reaching reproductive age. (frogworth.com)