you essentially overlook the origin of said memes.I don't overlook the origin. Your thrust seems to be that culture only magnifies innate difference. Perhaps this is true in simple cases, but I think that there are particular examples where culture takes on a mind of its own.
I point out that existing cultural bias might be due to biological bias interacting with environmental factors long extinct. This bias is encoded and preserved, unlike almost everything else in the animal kingdom, in human culture, which can be perpetuated and passed on. Existing cultural bias might just be a carry over from prehistoric times, entirely irrelevant to whether or not there are now meaningful differences in aptitude, in this, the present.
it actually seems more unnatural to claim equality on things like attitudes towards risk and attribute difference to culture.
I never claimed equality, I simply pointed out that the differences you'd expect due to biological selection are smaller in magnitude than those due to cultural selection, and so therefore born-attitudes towards things like risk should be largely outweighed by cultural ones.
My mind wouldn't scream inconsistency if I heard that women, on average, were intrinsically, say, 30% less likely to take big risks. That kind of difference seems reasonable. But the data on entrepreneurship implies a difference many dozens of times that.
I don't think this magnitude is consistent with other risky behaviors -- many women do risky things as well, like dating strange men in remote places, running away from home, abusing hard drugs, or keeping a pregnancy in ill-health. This difference in magnitude may be explained by cultural factors, because men have greater cultural support when projecting high-status creating cultural memes (especially those encouraging risky behavior).
this argument is usually the convenient one
Perhaps I was unclear. This is a very different argument than the one typically given, because it uses the very same mathematics that the evolutionary biologists use, only applied to culture. And what you find is that the factors in culture -- the influence of the same kind of mathematics, is much stronger.
the sperm of a high-status males, whom are shown to produce more offspring, still hold good chance to yield daughters.
Can you explain the relevance of this?