Excluding race-mixing, how long would it take for a population's skin color to change in accordance with their climate? An example would be if 1 million ancient Northern Euros were the only humans sent to an alien planet that was just like earth and to a region that has a climate similar to that of the Congo and then deprived of technology like air conditioning.

blacks stupid, whites good, push racism to destroy solidarity and make your career slightly more valuable before the indians and AI takes it

What are you talking about?

Would they select for people who don't get sunburns, thus leading to an altered phenotype overtime?

Is this correct?

You can just wear clothes or sunscreen to avoid the sun anon.

>>15353442 (OP)

A hundred thousand years or so? Also keep in mind that races don't differ just in skin colour but also things like jaw and nose size. These things are not depended only on the climate but the environment factors caused by said climate.

like what factors?

It wouldn‘t change, because white humans would regard a brown skin color as ugly and sexually select it out of their gene pool. They would never adapt.

>>15353442 (OP)

if there is no selection pressure for the populatioj to change, then it won't change

e.g. most of the white australians will never have increased melanin production, because they wear clothes and use sunscreen

>>15353442 (OP)

About 20000-30000 years

>the major migrations out of Africa to colonize the rest of the world were also dark-skinned

>Lighter skin tones evolved independently in ancestral populations of north-west and north-east Eurasia, with the two populations diverging around 40,000 years ago

>Studies have suggested that the two genes most associated with lighter skin colour in modern Europeans originated in the Middle East and the Caucasus about 22,000 to 28,000 years ago

https://en.wikipedia.org/wiki/Light_skin

Groups closer to the poles have vitamin D deficiency so they evolve lactose tolerance for instance

how is vit D related to lactose? i always thought lactose tolerance came from dairy use

>>15353442 (OP)

many millions of years longer than humans have existed. we were genetically engineered by an intelligent alien group, and different races were created to fulfill different purposes for them before they cut their losses and abandoned us about 10 million years ago. since then, natural evolution has barely made a dent in their designs.

>>15353442 (OP)

I think it's like 30-40 generations, per information I saw a year ago. Obviously don't have the source, but for what its worth but there you go (and this was specifically in regards to Africans hypothetically crossing over into Europe).

>Would they select for people who don't get sunburns, thus leading to an altered phenotype overtime?

>Is this correct?

skin color is not the only way to avoid the sun, hair also does the trick

Just a buck broken leftist who has /pol/yps in his brain, rent free I might add
