JD - I am wondering what part of the OP you are responding to?
In any case your topic is more interesting than Aba's.
It is beyond doubt that our personality, sexual orientation and even our religiosity is strongly influenced by our genes. That is not the same thing as fate. We are not entirely slaves of our genes.
I was responding to the idea that believing in God is inherent in our nature. I really don't believe that at all. I could concede it's normal to wonder how we got here, but I would challenge that studies in science specifically aimed at explaining this without God show its more about finding an answer to this - not about necessarily assuming it's God. Does that make sense?
Along with this, any familiar with Jesus deeds as they are recorded will remember that he wanted people to have faith of their own free will. I would challenge that putting into humans this intrinsic search would be like cheating. The bible says that those conscious of their spiritual need would be happy because it would be filled, therefore not everyone is conscious of it.
As far as how genes may influence us, I still would not be thrilled to know they influence us at all. I'd rather be completely free to make choices, not make choices that have been influenced. I.e., if I were a devout catholic, I'd feel kind of violated if I were to find out nature manipulated me to make that choice. If nurture influenced me that wouldn't bother me as much, since as an adult I'd be free of that influence. But genes would always be influencing me - I'd never be free, how could I trust my choices to be really me? Know what I mean?