The DNA genome has been mapped! There is no "relationship" gene, or "caring" gene, etc., that is female specific. Absent nature, we must turn to nurture. Women are told from infancy that we are more concerned with relationships. However, as I mentioned before, this is starting to ameliorate. That's why we are seeing dramatic increases in female violent crimes, drinking, drug abuse, etc. The younger girls have been taught they can act however they wish.
Have you heard of the tribe in Africa that had no contact with the rest of the world until it was discovered in the 70s or 80s (may have my time incorrect)? The women are the head of household, which makes perfect sense to them. Men can not reproduce; they can not sustain the tribe, therefore, they do not deserve the power. The women hunt while the men stay home and tend to the children. The women complain that the men are gossipers and demand too much of their time, and the men complain that they do not get enough affection from their wives and that their wives do not value their contributions.