In the game I'm playing now this is what I'm testing for. I have seen more kids born with likes and dislikes if BOTH parents have them. Sadly not very many are generated with those. Skills come from both parents and if both are masters in the same skill the child seemed to have more in that as well. I have looked in the game file with an editor and there are skill points added to everything that the parents had, but you must have a certain number for it to show up in the game. So far I have only had 1 runner from a parent with that skill, but I can't say I was all that thrilled over it. It isn't my favorite of the likes/ dislikes. It does have some use but also comes with a downside. The trade off isn't that great. When building the 2nd hut this guy dropped approx 15-20 boulders during the first 30% of contruction getting stuck on the hut or food bin. This is also true when doing harvesting. But the fishing goes very well.