Posted on 08/08/2025 12:25:29 PM PDT by SunkenCiv
The ancestors of all modern humans split off from a mystery population 1.5 million years ago and then reconnected with them 300,000 years ago, a new genetic model suggests. The unknown population contributed 20% of our DNA and may have boosted humans' brain function...
In a study published Tuesday (March 18) in the journal Nature Genetics, researchers presented a new method of modeling genomic data, called "cobraa," that has allowed them to trace the evolution of modern humans (Homo sapiens).
By applying their new method to modern human DNA data published in the 1000 Genomes Project and the Human Genome Diversity Project, the researchers discovered that there were two main ancestral groups that split around 1.5 million years ago, which they called Population A and Population B.
Just after that split, Population A experienced a bottleneck when the population plummeted and likely lost a significant amount of genetic diversity. But Population A grew over time, and Neanderthals and Denisovans branched off from it.
Then, around 300,000 years ago, Population A mixed with Population B, the researchers found. Their genetic analysis suggests that 80% of the genome of all present-day humans comes from Population A, while 20% of our genome comes from Population B...
Who those populations were, however, is not clear. In the study, the researchers noted that "various Homo erectus and Homo heidelbergensis populations that are potential candidates for lineages A and B existed both in Africa and elsewhere in the relevant period."
...But one of the drawbacks to the new model, according to Hawks, is that it is based on the 1000 Genomes Project, which has a low representation of African populations.
(Excerpt) Read more at livescience.com ...
I’m surprised the aliens guy has shown up on the thread yet. LOL
Selections from a bunch of homo keywords, sorted:
Bingo, ancient aliens. There’s no way the Egyptians built the pyramids without technological help.
“The ancestors of all modern humans split off from a mystery population 1.5 million years ago and then reconnected with them 300,000 years ago, a new genetic model suggests.”
That must have been some family feud, like on the scale of the Hatfields and the McCoys! ;)
Someone put raisins in the coleslaw.
They were balanced. You are good to go.
Does the article explain how come so many DNC voters (the real, live ones - not the ones in the cemetery) missed out on inheriting all those brains?
Yeah, we all blak now
At publishing time, Leeloo was not available for comment.
😁
Heh... that’s a prime example of sci-fi not making a lick of sense — OTOH it’s always fun to watch.
When you have too many people in a tribe, it’s more difficult to feed everyone.
Makes sense for groups to separate to look for better hunting grounds.
Or just to get away from all the snoring!
That would TOTALLY do it for me! Blech! ;)
I dunno about that, those statues of really fat chicks in sites like Catal Huyuk leads me to believe that there were Peg Bundy types in prehistoric times.
And all the time, they KNOW what they did.
Some things just can't be talked out.
I will add that bringing banana flavored instant pudding with no wafers or bananas when you said you would bring "Banana Puddling" is another such issue. You are on the Paper Products list for life.
Yep.
‘Hippy Micro-Brew Obsessed Brother In Law?’ You bring the beer...though we’ll have to LISTEN TO the intricacies of whatever beer you’ve brought...FOR HOURS, LOL!
(In his defense - he brews his own Raspberry Beer with homemade ingredients that is simply AMAZING - and I really don’t even LIKE beer!)
(The answer is yes, always plant more carnations.)
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