We believe with no resistance that certain mental illnesses, for example are hereditary; yet the evidence for that is far weaker than the evidence for heritability of intelligence. The default position of "it's all cultural" is not based on scientific data but on politics.
>> The default position of “it’s all cultural” is not based on scientific data but on politics.
Or in deference.
And it’s also fair to say there’s no direct correlation between IQ and morality, nor integrity.