when i talk about my genome being adapted to some kind of warm, humid climate, i want to be clear what stage of evolution i'm talking about, here.

clearly, there has been large amounts of gene flow through the western part of the old world, from the tip of norway to the reaches of the sahara, and from the distant island of ireland to the mountains overlooking the indian subcontinent. there has also been substantive gene flow into this region from the blackest reaches of africa and india, as well as the furthest reaches of the east. all of that substantive gene flow has prevented any sort of substantive subgrouping of broadly caucasian types from developing. if you take random people from britain, from libya, from italy, from turkey and from iran and mix them all up in non-descript clothing, or just observe them naked, you're consequently not going to find it as easy to identify them as you'd imagine.

i'm not suggesting that my warmer climate genetic history is suggestive of some kind of speciation event or something.

rather, i'm talking about percentages of alleles in the population that control for adaptations to climate, which i would imagine are not very likely to change over time in the presence of gene flow because the people that stay and thrive in whatever climate are those best able to adapt to it.

so, sure - people come and go. for that reason, people like me with a clear predisposition towards warmer weather get born in cooler climates, and those with a clear predisposition towards cooler weather get born in warmer climates. so, in any population, you're going to have a level of variation. but, what i'm getting at is that it's going to be those with the right match that actually thrive and reproduce, and that for that reason you would expect populations in sweden to be adapted to the weather differently than populations in sicily, when measured in aggregate. that is, alleles for the right kind of climate would predominate in either area.

i would thrive much better in a more tropical climate, and in a way where i'm able to enjoy the heat and humidity, i'm sure of it.