There is an old model in evolutionary biology known as Bergmann’s Rule: warm-blooded animals living in colder environments tend to evolve larger body sizes to minimize their surface-area-to-volume ratio, thereby conserving metabolic heat.
"The bottom line: Ancient height polygenic scores are not simply elevated because a population resides in a cold environment; they are specifically elevated in populations whose local environments recently became colder."
How does this comport with the very tall and very short tribes of sub-Saharan Africa?
"The bottom line: Ancient height polygenic scores are not simply elevated because a population resides in a cold environment; they are specifically elevated in populations whose local environments recently became colder."
How does this comport with the very tall and very short tribes of sub-Saharan Africa?