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Modern DNA Reveals Ancient Male Population Explosions Linked To Migration And Technology
Eurekalert! ^ | April 25, 2016 | Mark Thomson, Sanger Institute

Posted on 04/26/2016 11:36:26 AM PDT by SunkenCiv

The largest ever study of global genetic variation in the human Y chromosome has uncovered the hidden history of men. Research published today (25 April) in Nature Genetics reveals explosions in male population numbers in five continents, occurring at times between 55 thousand and four thousand years ago... analysed sequence differences between the Y chromosomes of more than 1200 men from 26 populations around the world using data generated by the 1000 Genomes Project... involved 42 scientists from four continents...

Analysing the Y chromosomes of modern men can tell us about the lives of our ancestors. The Y chromosome is only passed from father to son and so is wholly linked to male characteristics and behaviours. The team used the data to build a tree of these 1200 Y chromosomes; it shows how they are all related to one another. As expected, they all descend from a single man who lived approximately 190,000 years ago...

The earliest explosive increases of male numbers occurred 50,000-55,000 years ago, across Asia and Europe, and 15,000 years ago in the Americas. There were also later expansions in sub-Saharan Africa, Western Europe, South Asia and East Asia, at times between 4,000 and 8,000 years ago. The team believes the earlier population increases resulted from the first peopling by modern humans of vast continents, where plenty of resources were available.

The later expansions are more enigmatic.

Dr Chris Tyler-Smith, from the Sanger Institute, added: "The best explanation is that they may have resulted from advances in technology that could be controlled by small groups of men. Wheeled transport, metal working and organised warfare are all candidate explanations that can now be investigated further."

(Excerpt) Read more at eurekalert.org ...


TOPICS: History; Science; Travel
KEYWORDS: 1000genomesproject; adamandeve; ancestors; ancestry; baboonmarker; creation; eden; elainemorgan; familytree; gardenofeden; genealogy; godsgravesglyphs; helixmakemineadouble
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1 posted on 04/26/2016 11:36:26 AM PDT by SunkenCiv
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The correct number of chromosomes could have been discerned, one would think, during the almost 35 years involved in the events above. The most daunting realization is that the double heliacal form of DNA was discerned in 1953, two years before this chromosome count was corrected.


2 posted on 04/26/2016 11:37:03 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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GENOME
the autobiography of
a species in 23 chapters

by Matt Ridley
(from chap 9)
The different kind blood group you have determines your susceptibility to certain diseases. For example, people with A blood are less likely to get diarrhoea than people with B blood. People with O blood are more susceptible to getting diarrhoea than anybody else. People with AB blood are virtually immune to diarrhoea because of their resistance. Nobody really yet knows how AB genotype protects them from this disease. "Since people with the O blood are the most susceptible to the disease, shouldn't they die out according to natural selection?' you are probably asking. That is true but there are a couple of things that keep the O group alive and one of them is malaria. People with O blood are more resistant to malaria than other groups. Another thing is that the O group is less likely to get certain cancers. These benefits cancel out the negative effect that the O blood group has on the diarrhoea disease so, this balance has kept the group from disappearing.

3 posted on 04/26/2016 11:37:19 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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The Scars of Evolution:
What Our Bodies Tell Us
About Human Origins

by Elaine Morgan
"The most remarkable aspect of Todaro's discovery emerged when he examined Homo Sapiens for the 'baboon marker'. It was not there... Todaro drew one firm conclusion. 'The ancestors of man did not develop in a geographical area where they would have been in contact with the baboon. I would argue that the data we are presenting imply a non-African origin of man millions of years ago.'"
from the FRchives:
4 posted on 04/26/2016 11:37:41 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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The Neandertal Enigma
by James Shreeve

in local libraries
"Frayer's own reading of the record reveals a number of overlooked traits that clearly and specifically link the Neandertals to the Cro-Magnons. One such trait is the shape of the opening of the nerve canal in the lower jaw, a spot where dentists often give a pain-blocking injection. In many Neandertal, the upper portion of the opening is covered by a broad bony ridge, a curious feature also carried by a significant number of Cro-Magnons. But none of the alleged 'ancestors of us all' fossils from Africa have it, and it is extremely rare in modern people outside Europe." [pp 126-127]

5 posted on 04/26/2016 11:38:09 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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This diagram works for most people, but not for folks with Down's Syndrome and a few other conditions. F is for father, M for mother; each of us has up to 64 great-great-great-great-grandcestors; no more than 46 of them has had even one chromosome pair reach you; even with the occasional crossing stream, there's no more than 46, and with crossing streams, could be less.

For those who don't know, this doesn't mean the other 18 (and all of their ancestors, plus half of the ancestors of the 46) are not your ancestors -- DUH! IOW, just because the chromosomes don't make it through, doesn't mean that Oetzi (for example) has no living descendants.

One of my grandmas had no daughters (that lived), hence her mtDNA died out, and for the same reason so did her mom's -- her brother was her only sibling; on her mother's side, I know only of a brother; etc etc...
ggggGrand gggGrand ggGrand gGrand Grand parents YOU
             
 
   
 
     
 
   
 
       
 
   
 
     
 
   
 
         
 
   
 
     
 
   
 
       
 
   
 
     
 
   
 
           
 
   
 
     
 
   
 
       
 
   
 
     
 
   
 
         
 
   
 
     
 
   
 
       
 
   
 
     
 
   
 

6 posted on 04/26/2016 11:41:10 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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Great-great-great-great-grandparents, down to you. Most people have 23 chromosome pairs, which means that at least 18 of the gggg-gr generation didn't pass any of their genome to you, assuming there are no duplicates for that generations (because of criss-crossing lines of descent). The cell over the middle 46 is just an illustration, not to show which ones were and were not, since there's (probably, usually) no way to know exactly, short of the unlikely event of having genetic samples from all of one's gr-gr-gr-gr-grandparents.
9 46 9
                                                                                                                               
                                                               
                               
               
       
   
 


7 posted on 04/26/2016 11:41:18 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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To: StayAt HomeMother; Ernest_at_the_Beach; decimon; 1010RD; 21twelve; 24Karet; 2ndDivisionVet; ...

8 posted on 04/26/2016 11:41:37 AM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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To: SunkenCiv

In Islam, fully 50% of all marriages are between first cousins. This has been going on about 1400 years. This practice explains a lot about Muslims and Islam. But is also love to see how this would work out in these genomic theories. (Other than explain birth defects, disease, low IQ and insanity)


9 posted on 04/26/2016 11:52:48 AM PDT by Mamzelle
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To: SunkenCiv
Wheeled transport, metal working and organised warfare

"'But no man can do wrong who lays his chariot alongside that of a foe, and tries for a spear-thrust. Such was the courage and will of the men of old who stormed walls and laid waste cities.'"

Ahhh, the good old days.

10 posted on 04/26/2016 11:59:56 AM PDT by pierrem15 ("Massacrez-les, car le seigneur connait les siens")
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To: SunkenCiv

More recent advancements in technology seem to be causing the population to decline.


11 posted on 04/26/2016 12:24:59 PM PDT by smokingfrog ( sleep with one eye open (<o> ---)
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To: Mamzelle

Marrying your cousin, causing low IQ...damn that Insha’Allah!!!


12 posted on 04/26/2016 12:29:46 PM PDT by Jan_Sobieski (Sanctification)
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To: SunkenCiv

A fun series on Nat Geo that just aired is The Great Human Race. It had two survivalist actors who assumed the technology of the era and lived off it for five days.

First: use rocks to crack open bones as a scavenger. Then cutting tools. Then spears, then control fire, then domesticating animals, then bronze etc. until arrival in North America where they made cordage and nets and had all the salmon they could ever eat.

Using a rock to smash bones at a kill site was the God moment, around 3 million years ago. We could do something no animal could and became the apex predator and own the planet.


13 posted on 04/26/2016 12:33:30 PM PDT by cicero2k
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To: cicero2k

The birth of rock!


14 posted on 04/26/2016 12:39:01 PM PDT by SunkenCiv (Here's to the day the forensics people scrape what's left of Putin off the ceiling of his limo.)
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To: SunkenCiv

Which bracket is Gonzaga?


15 posted on 04/26/2016 12:57:48 PM PDT by frithguild (The warmth and goodness of Gaia is a nuclear reactor in the Earth's core that burns Thorium)
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To: frithguild

three to the side of bazinga


16 posted on 04/26/2016 1:45:16 PM PDT by bert ((K.E.; N.P.; GOPc;+12, 73, ....)
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To: SunkenCiv

Wow! Good find!

And guess what ... the Chinese, with their one-child-per-family policy of abortion have been selectively breeding for males. Not enough females have been allowed to live. This can’t end up well. God help us.


17 posted on 04/26/2016 4:37:07 PM PDT by TEXOKIE (We must surrender only to our Holy God and never to the evil that has befallen us.)
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To: TEXOKIE; SunkenCiv; smokingfrog; BenLurkin; All

It should end up very well. Fewer females, with a desire for a low birthrate should be the saving of China, by reducing their 1 1/2 billion population down to a survivable size in a century or two. Less fighting for resources with us and others, good result.


18 posted on 04/27/2016 12:06:06 AM PDT by gleeaikin
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To: smokingfrog; SunkenCiv; All

The rapid expansion of males in the 55,000 to 50,000 year range probably represents a bettering of conditions after the severe cold and starvation that shrank the human population when the Toba supervolcano blew its top. This eruption left a crater 18 miles by 65 miles—larger than the Yellowstone basin—and a noticeable slump in the earth’s temperature record around 74,000 years ago.


19 posted on 04/27/2016 12:09:23 AM PDT by gleeaikin
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To: gleeaikin

The difference between Toba at 74000 and the so called increase at 50-55000 is too great a period to attribute that leap to Toba. 20000 years is time for 3 civilizations like our current one to come and go.

The human race recovered, after the dark winters of the Younger Dryas ended, in little more than than half that time - 12,000 years later we are again a worldwide civilization.


20 posted on 04/27/2016 4:35:36 AM PDT by PIF (They came for me and mine ... now it is your turn ...)
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