Earlier quoted context omitted.
> It's an answer to the question of "Why do we see different representation of these groups on the height spectrum?" But we already know that, by and large. It's genetics. And the thing we know about genes is that they align very poorly with "races". It's like grouping animals by color. Then you discover that brown animals are bigger than red animals, because bears are brown and bears are big whereas cardinals are re…
But there are groupings of people by genetic markers which correlate to linguistic/cultural origin. These aren't "races" per se but they are a valid and interesting taxonomy of people. And unsurprisingly given they are determined by genetic distance, these groups tend to have a more homogenous physical appearance. When we're talking about IQ, asking "why is does it differ across identifiable groups of people?" seems…
By these logic every form of life it's the same since all evolved from the same unicellular organisms.
And yet my cat doesn't have leaves while my plant I keep in the pot doesn't meow.