A fisherman on a traditional Sardinian boat made of common reeds. [Photo by Gianluca Dedola]
Posted on 08/03/2013 6:15:52 PM PDT by SunkenCiv
Previous genetic research has indicated the existence of two ancient modern human individuals who passed their genes along to all humans living today... "Mitochondrial Eve"... between 190,000 and 200,000 years ago, and ... "Y-chromosomal Adam", between 50,000 and 115,000 years ago.
Now, a team of researchers led by Stanford University's Carlos Bustamente and David Poznik have redefined the ranges for Y-chromosomal Adam and Mitochondrial Eve, placing them at 120,000 to 156,000 years ago and 99,000 to 148,000 years ago, respectively. The most significant finding relates to the relative timing of their existence...
...The researchers compared Y-chromosome sequences among 69 men from nine globally distinct regions, recording 11,000 mutations that have influenced the Y chromosome over time. From this they were able to reconstruct a "Y chromosome tree" to identify a time period for the MRCA.
However, the new chromosome tree did much more than identify the overlap between Y-chromosome Adam and Mitochondrial Eve. It also revealed some previously unknown relationships that occurred among populations as humans expanded out of Africa into Eurasia...
In another similar recent study by an international team led by Paolo Francalacci and colleagues, a genetic analysis of 1,204 men from the island of Sardinia in the Mediterranean Sea identified thousands of mutations on the Y chromosome, 6,751 of which had never been documented before. Their results suggested that human paternal lineages coalesced between 180,000 and 200,000 years ago.
...it was not likely that Y-chromosome Adam and Mitochondrial Eve lived within the same generation, nor were they the only man and woman alive at the time or the only people to have present-day descendants. They simply had DNA portions that, because of their unchanging nature, made them more detectable and traceable, while the same sequences of others have become extinct...
(Excerpt) Read more at popular-archaeology.com ...
A fisherman on a traditional Sardinian boat made of common reeds. [Photo by Gianluca Dedola]
I am not surprised by this surprising discovery.
Do they know their names yet?
What did Adam do for the 30,000+ years before Eve showed up? Reproduction is a real conundrum for evolution, because if any minute part of either reproductive system is missing, reproduction doesn’t happen. It would take billions of years for two completely different reproductive systems to evolve, and life would have been extinct.
Didn’t “Eve” show up first?
“”Mitochondrial Eve”... between 190,000 and 200,000 years ago, and ... “Y-chromosomal Adam”, between 50,000 and 115,000 years ago.”
Still, that’s a long time for anyone to hang out in the primordial singles bar, waiting.
:)
People who actually read the above excerpt or the entire article have already learned that the two estimates of age ranges now overlap, whereas the earlier studies didn’t.
Adam and Eve, it’s right in the title, geez. ;’)
And from the “not a chance in hell” desk:
Human populations are tightly interwoven
Nature | September 29, 2004 | Michael Hopkin
Posted on 09/30/2004 11:17:34 AM PDT by AZLiberty
http://www.freerepublic.com/focus/chat/1231661/posts
[snip] Researchers have calculated that the mystery person, from whom everyone alive today is directly descended, probably lived around 1,500 BC in eastern Asia. Douglas Rohde of the Massachusetts Institute of Technology in Cambridge and his colleagues devised the computer program to simulate the migration and breeding of humans across the world. By estimating how different groups intermingle, the researchers built up a picture of how tightly the world’s ancestral lines are linked. [/snip]
I don’t know what they did without women, but the place must have been a mess with clothes all over the place, the bathrooms would have been a sticky mess, and the unwashed dishes would be piled high.
Actually, they’d have all starved to death staring at the refrigerator waiting for food to “happen”.
;D
I guess. No Mac and cheese, hot dogs and beer. That’s what my house lived on before we found our wives.
Boy, it must have smelled pretty gassy back then.
Unless they were once immortal.
LOL
>>What did Adam do for the 30,000+ years before Eve showed up? <<
No nagging
Drink beer
No clothes, so no mess
No work, all play
Kinda cool.
And to the NSA trolls, FU.
That statement makes no sense. How were the Egyptians of 3000 BC related?
You would expect eve to be much older. Adam is not Adam, but Noah. Genetically men were necked down to Noah and his 3 sons. Now we know Noah’s sons wives were not sisters.
It has not been made official yet but the rumors are, Maria Cacciatore, and Marvin Schwartz....
It took them 28,000 years to finally hook up coz Eve was playing hard to get.
Ohhhhh...know I understand why the Sardinian cruise ship industry never took off.
Bet ya the ground shook when they finally got together....................Just guessing :)
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.
![A fisherman on a traditional Sardinian boat made of common reeds. [Photo by Gianluca Dedola]](http://popular-archaeology.com/image/146809/researchers-shed-new-light-on-genetic-adam-and-eve?max_width=250&max_height=1000&q=70)
