I recently touched upon this subject in the History section of the forum. The possibility that we carry a gene that makes us all prone to violence has some religious implications I would think, especially for creationists. If God created us then he definitely genetically engineered us. If we do possess a violence gene then I have to ask why in the name of God did He include it as a part of our make up. Apparently this gene, MAOA for short, has a higher propensity for becoming active in abused children but that is secondary. Primarily, the fact that a violence gene even remotely exists has to make one wonder just why it's there in the first place.
Thou shalt not kill, nice words, nice rule, but how can humans honestly be expected to adhere to it if were all endowed with the mechanism that may cause us to become killers. I can only think that if there is a creator then the gene was intentionally inserted. God, if He exists, has thrown the proverbial monkey wrench into the human genome. Once the gene is triggered do we have control, are we still responsible?
How does one choose not to kill when killing & violence are genetically implanted within our very being? How do we change the program God wanted? Some will say we still have to choose our actions but I how difficult is it if we have violence wired into our hard drive?
Does God expect us to overcome His design peculiarities? If the violence gene is real, or if there are more, will it be more of direct evidence of God or of evolution?