Language engenders physical responses in the brain. Terms, which are usually not specifically agreed upon but serve as some method of communication are a product of the brain's language mechanism. Terms such as "justice", "beauty" and other concepts may be on the surface mutually agreed upon but as semanticists tell us, not everyone is on board with the same meanings. Existential or experiential "ideas" are manufactured by the individual brain of those who have them. Many philosophers insist that these abstract and sometimes absolute concepts exist outside the brain but as we evaluate these concepts, we see that the meaning of what is perceived differs slightly from one person's brain to another.

In the gene pool, selectivity is not just for brawn, not a total measure of survival, but abilities that extend to different intelligences. These may be attractive to members of opposite sexes and thus create a unique gene pool.

What appears to be "hard wired" are basic needs but variation exists even among these.
The brain can sometimes be conditioned to change what is considered to be "hard wired" as in an Indian Fakir who can control the flow of his blood after having his body punctured by nails on a bed.

What is "hard wired" however is language which influences behavior and emanates from the physical brain. This language determines behavior.

The physical properties of the gene building blocks can be said to be hard wired into the unit that is being built. As Dawkins has pointed out, it is necessary to separate the notion of a unit (being or body) from the genes that create it. The genes, not the bodies control survival.

I don't think there is a god gene because the notion of worshipping an abstract being is compounded by a lack of agreement as to what or who that is. There is however, as Dawkins has pointed out, a "meme" which is a viral idea that self-replicates as an accepted notion. Religion is one of these.

Religion seems to be a Manichean construct contrasting good and evil which are linguistic concepts and these terms are not well-defined unanimously by every person (brain).
This is why there is not one religion unilaterally. Many of these religions have tenets that are in opposition to one another as well as those considered to be underlying agreements.   "Good" and "Evil" are not mutually agreed upon by everyone.

Take the issue of capital punishment for example.