Posted on 01/14/2020 7:22:36 AM PST by Quality_Not_Quantity
Today it's a desert. Two hundred thousand years ago, perhaps it was home.
The San people of southern Africa carry one of the oldest maternal DNA lineages on Earth. Now, researchers think they know the precise place our earliest maternal ancestor called home. (Image credit: Shutterstock) Two hundred thousand years ago, the earliest shared ancestors of every living human on Earth rested their feet at a verdant oasis in the middle of Africa's Kalahari Desert.
Here, in a patchwork of now-extinct lakes, forests and grasslands known as the Makgadikgadi paleowetland, our greatest grandmothers and -grandfathers hunted, gathered and raised families for tens of thousands of years. Eventually, as Earth's climate changed, shifts in rainfall opened up fertile new paths through the desert. For the first time, our distant relatives had the chance to explore the unknown, putting behind them what a team of researchers now calls "the ancestral homeland of all humans alive today."
That's the story, anyway, told by a new paper published today (Oct. 18) in the journal Nature.
By studying the genomes of more than 1,200 indigenous Africans living in the southern part of the continent today, the team pieced together a history of one of the oldest DNA lineages on Earth: a collection of genes called L0, which is passed down maternally through mitochondria and has survived remarkably unchanged in some populations for hundreds of thousands of years. By tracking where and when the L0 lineage first split into the slightly different sublineages still seen in some indigenous African populations today, the researchers believe they have pinpointed precisely where the first carriers of L0 lived and thrived for thousands of years.
(Excerpt) Read more at -livescience-com.cdn.ampproject.org ...
It’s not that climate change was created by humans, it’s that humans made it angry. Now instead of friendly climate change that once helped humanity, we have furious, vengeful climate change that’s bent on destruction and planet-killing. Sort of like how Anakin Skywalker became Darth Vader, only using SUV’s instead of the Force.
I would be interested in the median IQ of this group
They’d still be there, too.
If it weren’t for that damned Coke bottle.
Humanity arose out of Africa and dispersed to other parts of the world.
It was an evolutionary gamble and we are the most successful great ape in natural history.
Our chimpanzee and gorilla relatives are on the brink of extinction.
“This all sounds so political to me rather than scientific, favoring all the favored groups and continents, so pardon me for being skeptical.”
I have the same level of skepticism.
Today in everything, including science, the political agenda comes first and then whatever cherry picked (or even fabricated) data or “evidence” they manage to scrounge up in support of that agenda.
The rational default position today should be to question everything from everybody, including our side.
Gaslighting is the most prevalent public activity today, and like the movie, it is literally driving people crazy.
Nice!
“they will be able to trace life all the way back to where life began from non-life.”
It’ll be interesting to know what DNA primordial ooze has. /s/
Yes everyone has it and yes it's all ancient. There is a slow rate of change in the mitochondrial DNA due to mutation, which is what allows us to group and date populations.
"Is this “new” species Neanderthal, and if so what is the putative age of Neanderthal mitochondrial DNA? Or, were those African women so appealing and so fecund that there is no Neanderthal mitochondrial DNA remaining?"
It's not clear what your question is here. You've premised some "new species" on mitochondrial DNA not being ancient, then proceeded as if this was a fact.
"This all sounds so political to me rather than scientific, favoring all the favored groups and continents, so pardon me for being skeptical."
Nothing raised here suggests politics in the study of mitochondrial DNA.
All most 3 years ago a sibling to get me back into our genealogy, paid for a year’s subscription and my DNA test with the big mother of genealogy.
At that time I had 6% African DNA and that sibling had 4% and one of her adult off spring had 3% and grand kids had 2%. All of the so called African DNA came from the geographical and tribal areas for all of our 3 generations.
In a couple of years, I added over 15k ancestors, and my African DNA dropped to 3% due to the predominant % of snowflake ancestors. My sibling dropped to 2%, and her adult child stayed at 3% and grand kids stayed at 2%.
A year later, my ancestor count is 29 k, and my African DNA has dropped to 3% with all of the snowflake ancestors added.
My sibling no longer has the same geographical/tribal area, and she has stayed at 2% African DNA, but from a different Gene pool. An area south of where my DNA came from and where her DNA used to come from.
Her daughter and grand kids still have the original African DNA pool that I have and the same %. They don’t have the same DNA pool that their grandmother/mother/and I have.
If the above doesn’t give one a DNA headache, try this puzzle.
I have over 150 documented Cherokee Indian and/or their cousins documented in weddings, births and other paper documentation showing American Indian ancestry and zero American Indian DNA. Neither does my sibling, her daughter and grand kids have any American Indian DNA in their trees.
So this DNA thing in certain ancestral areas is not an exact science.
To muddle your brain, mine and others who dare to ask, “How much pc crap is involved in the African DNA and some other DNA’s, please take a minute to read my reply to muddy the DNA water even more.
http://freerepublic.com/focus/chat/3808053/posts?page=30#30
Yes, life in the Kalahari was much safer 200,000 years ago—no Coke bottles falling out of the sky.
To muddle your brain, mine and others who dare to ask, “How much pc crap is involved in the African DNA and some other DNA’s, please take a minute to read my reply to muddy the DNA water even more.
http://freerepublic.com/focus/chat/3808053/posts?page=30#30
To muddle your brain, mine and others, who dare to ask, “How much pc crap is involved in the African DNA and some other DNA’s.”
Please take a minute to read my reply to muddy the DNA water even more.
http://freerepublic.com/focus/chat/3808053/posts?page=30#30
Or is it that the orientals have a San cast ?
Cross breeding between Neanderthal and Heidelbergensis produced a hybrid which may or may not have been Denisovans who interbred with Neanderthal to produce still another hybrid who interbred with Cro-Magnon. None of which happened in Africa, but rather Asia. Europeans and Asians have Denisovan and Neanderthal mDNA, Africans do not. Modern humans with Asian or European descent are essentially Heidelbergensis/Neanderthal/Denisovans/Cro-Magnon hybrids.
The whole Out-of-Africa meme is under serious scientific mDNA and blood group tracings pressure; this study may well be an attempt to reassert it. That the reassertion carries some political baggage is a clue as to the assertions goal.
Nature, original paper abstract
https://www.nature.com/articles/s41586-019-1714-1
*wink*
Glad a few got the reference. Funny movie!
Wiki says: “No evidence of Neanderthal mitochondrial DNA has been found in modern humans. This suggests that successful Neanderthal admixture happened in pairings with Neanderthal males and modern human females.”
So no “human” guys “sampled” Neanderthal women???
Is that what in a gada da vida is supposed to mean?
It was supposed to me "In the garden of Eden" but when the author repeated it he was so drunk it came out in a gada da vida - true story according to a recent bio on some video streaming program I recently stumbled on to.
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