Before starting to respond to this, I googled the question: Do genes affect personality traits? The first link that came up was this site so I had a quick read through. Here are a couple of random quotes from the pageQuote
Good morning Susan! How do genes affect our moral strength? Thanks,
There is still much work to be done of course, but genetic inheritance is a very strong factor. I have only to think of my older sister and two younger brothers and our strongly differing personalities to know that, in spite of a fair and caring upbringing, we remained basically very different.Quote
One potentially promising approach involves examining many candidate genes that relate to a specific biological system associated with personality. In one such approach, Jamie Derringer led a consortium of researchers in an examination of a collection of SNPs associated with Dopamine in prior research, and then examined associations …
you've made it this far, you can appreciate (like I do), that the question: "Do genes influence personality?" cannot receive a simple answer. On the one hand, genes clearly seem to contribute to personality, but on the other, much of the genetic evidence has not supported this view…
What do you think?