A very common belief here is that most human behaviour is based on Paleolithic genes, and only trivial variations are cultural (memetic), coming from fresh genes, or from some other sources.

But how strong is the evidence of Paleogenes vs memes vs fresh genes (vs everything else)?

Fresh genes are easy to test - different populations would have different levels of such genes, so we could test for that.

An obvious problem with Paleogenes is that there aren't really that many genes to work with. Also, do we know of any genetic variations that alter these behaviours? If preference for large breasts was genetic, surely there might be a family somewhere with some mutation which would prefer small breasts. Do we have any evidence of that?

So I suspect memes might be much more important relative to Paleogenes than we tend to assume.