Yes, everything is genetic. Can't speak for divorcees, but the career women I've met have generally been more 'masculine', so to speak. We know that 2D:4D is genetic and has a strong correlation with leadership ability, so it wouldn't surprise me that such could come to be selected against in women.
Religiosity is genetic, and that has quite strong effects on fertility.
Religiosity is genetic, and that has quite strong effects on fertility.