Earlier quoted context omitted.
>> So only physical characteristics are heritable? See my point above - physical characteristics are directly observable, and therefore, measurable. Mental, emotional etc psychological characteristics are not directly observable, so are only measurable through a proxy. In the case of intelligence, the proxy is an IQ test and we don't even have a good definition of what it is we're proxying, so it might not even be a…
The study of IQ (and the underlying g ) is one of two or three (definitely less than 6) crown jewels of psychology. You should probably read the actual science, "we" know quite a bit about intelligence. (I can help get you started if you're really interested, but I suspect you aren't.)
There is very little disagreement on that in the field of AI. In fact, there is so much agreement that we have no idea what intelligence is, that we've totally given up on trying to understand it and instead switched to hoping that intelligence will naturally arise if we create complex enough systems (complex enough that we also don't understand them very well).
All that said, you're welcome to point me to the studies that are relevant to your field and I will gladly go through them, although I can't guarantee that I have the time to do so on time to continue this debate in this thread.