Originally posted by: Siva
Religion is definately not genetic, its a biproduct of society. Religion isn't always a negative thing, its part of the human condition, whether you're athetist or Islamic you still have a system of beliefs that rationalize the otherwise senseless world. Its healthy when not taken to extremes.
I disagree with your first sentence. While a social abstraction like religion is obviously not a genetic condition, it is an acquired characteristic (i.e. Lamarckian). While acquired characteristics aren't inherited, the propensity for them are: enlarged temporal lobes, self-awareness, knowledge of one's mortality, etc. Those are all genetic neurological conditions serving as a foundation for evolution of religiosity. Those are just a few examples I thought of right now, so don't berate me for not being comprehensive.