Going with hijacking off-top - What in America is called 'race' - i.e. white, black, asian, etc. - is, in reality, only specific mixture of genes from proper humans races ancestors, i.e. Neatherdals, Denisovians, Homo Erectus, etc. Newest researcher shows we all are Homo Sapiens ( mostly ), only difference are little small variants of ours forefathers mating with other real humans races. And we all can intermix without problems - that would be real races if we could not mix, on genetically level.
'Traces of mystery ancient humans found lurking in our genomes
Prehistoric humans were sexual adventurers, mating with Neanderthals and Denisovans, but DNA studies reveal dalliances with populations we never knew existed
(...)
The idea that each of our cells might contain fragments of genetic code from extinct species has been around for well over a decade. Then, in 2008, Svante Pääbo and his team at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, pulled off the master stroke of teasing DNA out of millennia-old Neanderthal bones in quantities great enough to sequence. This provided an obvious way to find out if Homo sapiens had bred with Neanderthals (Homo neanderthalensis): you could simply look within the genomes of living people for DNA sequences with distinctly Neanderthal patterns of mutations. These comparative studies revealed that early humans had indeed mated with Neanderthals, and not just once. Current estimates are that the genomes of everyone except Africans are between 2 and 4 per cent Neanderthal.
(...)
Once again, comparisons with modern human genomes showed that the two interbred. Genetic studies reveal this to have happened in Eurasia. They also show that Denisovans ranged from Siberia to South-East Asia, and that at least one of their genes helps modern Tibetans to live at high altitude. The idea that our ancestors hybridised with other hominins was once dismissed. Now it was starting to look as though they would mate with anything vaguely human.
(...)
The most-likely explanation is that soon after that migration, a group of humans became isolated while the rest bumped into and mated with Neanderthals. “If you like, it’s a third branch,” says Chris Stringer of the Natural History Museum in London – a branch that is distinct from the humans who had stayed in Africa and the ones who were gradually spreading out across Eurasia, Australia and eventually into the Americas. Because there are no known fossils belonging to Basal Eurasians, it is impossible – for now – to say why they were isolated. Perhaps it was just down to where they settled, far from other groups. Or maybe they developed cultural differences. Either way, these ghosts didn’t mix with the rest of humanity for millennia – long enough to evolve distinct genetic markers.
(...)
It now transpires that Denisovans had their own ghosts. People living in Oceania and East and South-East Asia today have inherited about 5 per cent of their DNA from Denisovans. By taking a closer look at these genetic sequences, Akey’s team found that they don’t all relate to the original finger-bone genome in the same way. In fact, the group found signs of two evolutionarily distinct Denisovan populations. “That was really unexpected,” he says. “There’s actually another, ghost, Denisovan lineage.”'
https://www.newscientist.com/article...n-our-genomes/
'Traces of mystery ancient humans found lurking in our genomes
Prehistoric humans were sexual adventurers, mating with Neanderthals and Denisovans, but DNA studies reveal dalliances with populations we never knew existed
(...)
The idea that each of our cells might contain fragments of genetic code from extinct species has been around for well over a decade. Then, in 2008, Svante Pääbo and his team at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, pulled off the master stroke of teasing DNA out of millennia-old Neanderthal bones in quantities great enough to sequence. This provided an obvious way to find out if Homo sapiens had bred with Neanderthals (Homo neanderthalensis): you could simply look within the genomes of living people for DNA sequences with distinctly Neanderthal patterns of mutations. These comparative studies revealed that early humans had indeed mated with Neanderthals, and not just once. Current estimates are that the genomes of everyone except Africans are between 2 and 4 per cent Neanderthal.
(...)
Once again, comparisons with modern human genomes showed that the two interbred. Genetic studies reveal this to have happened in Eurasia. They also show that Denisovans ranged from Siberia to South-East Asia, and that at least one of their genes helps modern Tibetans to live at high altitude. The idea that our ancestors hybridised with other hominins was once dismissed. Now it was starting to look as though they would mate with anything vaguely human.
(...)
The most-likely explanation is that soon after that migration, a group of humans became isolated while the rest bumped into and mated with Neanderthals. “If you like, it’s a third branch,” says Chris Stringer of the Natural History Museum in London – a branch that is distinct from the humans who had stayed in Africa and the ones who were gradually spreading out across Eurasia, Australia and eventually into the Americas. Because there are no known fossils belonging to Basal Eurasians, it is impossible – for now – to say why they were isolated. Perhaps it was just down to where they settled, far from other groups. Or maybe they developed cultural differences. Either way, these ghosts didn’t mix with the rest of humanity for millennia – long enough to evolve distinct genetic markers.
(...)
It now transpires that Denisovans had their own ghosts. People living in Oceania and East and South-East Asia today have inherited about 5 per cent of their DNA from Denisovans. By taking a closer look at these genetic sequences, Akey’s team found that they don’t all relate to the original finger-bone genome in the same way. In fact, the group found signs of two evolutionarily distinct Denisovan populations. “That was really unexpected,” he says. “There’s actually another, ghost, Denisovan lineage.”'
https://www.newscientist.com/article...n-our-genomes/
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