There's a stretch of technical dialogue in Favorite Son that rather forthrightly that genetics don't determine behavior. I've never quite figured out if the DS9 fans in particular can't even review this episode because it implicitly rejects the whole moronic concept of the Jem'hadar
So you get your scientific information from terrible Voyager episodes? There's nothing moronic about the concept of the Jem Hadar, and there's a ton of genetic research that is finding markers that seem to pre-determine certain behavioural patterns that go on in life. Sometimes I think you're just the biggest troll on this forum but I can't tell what you're getting out of it.