I have yet to meet a person who seems to be as changed by the genetic and evolutionary writings of Steven J. Gould as I have.
In a half dozen books, Gould makes clear, that every generation of children is born into the normal distribution of intelligence. Parental intelligence is not passed on genetically to children. Each child born to the smartest and dumbest parent is just as likely to have an 110 IQ as a 90.
What confuses people, especially parents, is
that children tend to look like one or both of their parents or their
grandparents and their siblings.
The reason genes carry the skin color, size, facial attributes of the parents on to the children is that these are tribal markings encoded in the genes by large scale tribal and group evolutionary patterns.
There is plenty of evidence that genes carry tribal markers that emerge as appearance, but there is no evidence that genes carry intelligence.
Gould's lessons on this subject do not seem to have sunk in...at all.