yes but thats not quite what I am getting at.
Lets agree that children from high aspirational families/university educated , backgrounds would be expected to
1) belong to the middle-classes
2)have more childfren going to Grammar/Selective schools
seems self evident? this is the nurture part
But my point is
1) did they get to be middle class because they are genetically more intelligent and have passed on these genes generation after generation? in a Darwinian sense( the nature part that I am interested in)
or have the intractable issues of poverty itself prevented the poor from socially moving up?
I think this my helphttp://www.bbc.co.uk/news/science-environment-23881780