Would Robert Adrey’s ‘Killer Ape’ Theory Explain Variances In Passive-Aggressive Societies?

Question

Adrey theorized that during evolution early man fragmented into separate heredity types, with many developing aggressive genes and the rest retaining more passive genes. The fragmentation continued as like-minded sub-cultures developed and the different sub-cultures started distancing themselves from each other. And that these gene types were passed down from generation to generation, to the extent of explaining why some cultures and sub-cultures tend to be more aggressive than others.

How predominate a role do you think hereditary genes play into the more violent personality types? Collectively or individually?And if it's strictly an individual trait how would this account for certain cultures tending to be more aggressive than others?

Environment? Heritage? Both?

Answer 1

Hello Doctor :)
I actually read a news story a few days ago about Neanderthal's might have been able to talk, here's the story:http://nz.entertainment.yahoo.com/071018/5/23m0.html

I apologise if you have already read it and I personally think when it comes to someone's family tree that some violent genes will be passed on to some whilst others are skipped.

I can't decide whether it is passed on collectively or individually sorry.