Hi, VV.  I think it also has something to do with genetics, that in many cases of black/white parents having a child, the genetic or DNA of the black parent is dominant in terms of hair, skin, and physical features.  At least that has been my understanding of it.  Among mixed-race children, I have observed many who appear to be lighter-skinned black, but have green eyes, or European-type noses, or hair of a brownish red.  Fascinating. Sadly, they are often rejected by both white and African American communities.  How we visit our sin on the children.....