TIL that due to a genetic bottle neck, 10% of the population of the pacific atoll of Pingelap has achromatopsia, i.e. only sees in black&white
TIL that due to a genetic bottle neck, 10% of the population of the pacific atoll of Pingelap has achromatopsia, i.e. only sees in black&white
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genetic bottleneck ...as in inbreeding?
Fun fact when Homo Sapiens migrated out of Africa it also experienced a genetic bottleneck since the group that left Africa was small in numbers. We can even see it in our DNA. Compare the DNA of a person with East Asian genes to the DNA of a Western European and you will find a higher percentage of similarities, than when you compare a West African’s DNA to that of an East African. Africa is genetically the most diverse region on the planet. Even though early Europeans mixed with the Neanderthals.
Another cool fact: Chimpanzees are more genetically diverse than Homo Sapiens.
It amazes me how little population migration there has been in africa. Discrete groups remain isolated from each other for tens or even hundreds of thousands of years. Everywhere else, population migrations and genetic mixing has occured regularly.
Probably because Africa is very hard to cross on foot. There is a desert up north and a very dense jungle in the middle surrounded by savannahs and rivers full of dangerous animals. Also probably hunter gatherers in Africa had it pretty good because of the abundant flora and fauna, so there was no need to trek far. So the only people that mixed with others were sea faring tribes or came in contact with sea faring traders. Like Madagascar people have Austronesian genes in their DNA and even their languages falls under the Austronesian family.
My guess is that Africa's more equitable geography didn't often spur people to leave where they were born.
so, what you tell me is that white people are inbred, neanderthal hybrids?
that explains so much lmao
As an european, this explains a lot.
Yes. The difference being that it was due to circumstances that devastated the population.
20 survivors * 10 or so generations.
So inbreeding coefficient is around siblings for the entire population.