There are single nucleotide polymorphisms which have a drastic impact on aggression in humans. For example one MAO-A gene type leads to hyper-aggressive behavior in humans and macaque monkeys. I doubt it is culture causing this behavior in monkeys and humans.
There are single nucleotide polymorphisms which have a drastic impact on aggression in humans. For example one MAO-A gene type leads to hyper-aggressive behavior in humans and macaque monkeys. I doubt it is culture causing this behavior in monkeys and humans.