S
We can agree to disagree-- but good luck trying to pinpoint a "gene" that makes girls like pink, and princesses more. Stereotypes ring true because agents of socialization are a very real thing.
Yes, there could be some physiological evidence behind the nurturing spirit of mothers (traced to prolactin, or oxytocin) but that is more reflective during mid-pregnancy or neo-natal motherhood.
There are caring, nurturing, snuggling girls. There are distanced, tomboyish, rebellious girls.
There are boys who want to wrestle and break shelfs from standing on them.
Then there are three boys like in my family, a family where the boys have literally never wrestled with each other, and would rather just sit together and hang out and walk around n ****.
People are different because PEOPLE are different, by and large-- trying to pin differences based on 1 tiny chromosome is ignoring how much of an impact that 23 larger ones can have-- and this is not even taking into account how genetics plays a much smaller role in personality-determination that many expect.