Read the Beforeitsnews.com story here. Advertise at Before It's News here.
Profile image
By Alton Parrish (Reporter)
Contributor profile | More stories
Story Views
Now:
Last hour:
Last 24 hours:
Total:

Remains of Ice Age Romanian Woman, Predecessor to Modern Europeans Shows Out of Africa Migration Was No Great Bottleneck to Human Development

% of readers think this story is Fact. Add your two cents.


Peştera Muierii 1 is the name given to one of the three individuals whose remains were found in a cave of the same name. Peştera Muierii (roughly translates to women’s cave) is the name of a cave system in Baia de Fier in southern Romania. It is best known for the remains of cave bears and for the 1950s discovery of skulls and other skeletal parts from three females that lived about 35,000 to 40,000 years ago.

For the first time, researchers have successfully sequenced the entire genome from the skull of Peştera Muierii 1, a woman who lived in today’s Romania 35,000 years ago. Her high genetic diversity shows that the out of Africa migration was not the great bottleneck in human development but rather this occurred during and after the most recent Ice Age. This is the finding of a new study led by Mattias Jakobsson at Uppsala University and being published in Current Biology.

Credit: Uppsala University Credit: Mattias Jakobsson

“She is a bit more like modern-day Europeans than the individuals in Europe 5,000 years earlier, but the difference is much less than we had thought. We can see that she is not a direct ancestor of modern Europeans, but she is a predecessor of the hunter-gathers that lived in Europe until the end of the last Ice Age,” says Mattias Jakobsson, professor at the Department of Organismal Biology at Uppsala University and the head of the study.

Very few complete genomes older than 30,000 years have been sequenced. Now that the research team can read the entire genome from Peştera Muierii 1 (see the fact box below), they can see similarities with modern humans in Europe while also seeing that she is not a direct ancestor. In previous studies, other researchers observed that the shape of her cranium has similarities with both modern humans and Neanderthals. For this reason, they assumed that she had a greater fraction of Neanderthal ancestry than other contemporaries, making her stand out from the norm. But the genetic analysis in the current study shows that she has the same low level of Neanderthal DNA as most other individuals living in her time. Compared with the remains from some individuals who lived 5,000 years earlier, such as Peştera Oase 1, she had only half as much Neanderthal ancestry.

The spread of modern humans out of Africa about 80,000 years ago is an important period in human history and is often described as a genetic bottleneck. Populations moved out of Africa and into Asia and Europe. The effects of these migrations can be seen even today. Genetic diversity is lower in populations outside of Africa than in African. That Peştera Muierii 1 has high genetic diversity implies that the greatest loss of genetic diversity occurred during the last Ice Age (which ended about 10,000 years ago) instead of during the out of Africa migration.

 

The skull of Peştera Muierii 1. Now researchers have successfully sequenced the entire genome from the skull of Peştera Muierii 1, a woman who lived in today’s Romania 35,000 years ago. 

 

 

Credit: Mattias Jakobsson

“This is exciting since it teaches us more about the early population history of Europe. Peştera Muierii 1 has much more genetic diversity than expected for Europe at this time. This shows that genetic variation outside of Africa was considerable until the last Ice Age, and that the Ice Age caused the decrease in diversity in humans outside of Africa.”

The researchers were also able to follow the genetic variation in Europe over the last 35,000 years and see a clear decrease in variations during the last Ice Age. The reduced genetic diversity has previously been linked to pathogenic variants in genomes being more common among populations outside of Africa, but this is in dispute.

“Access to advanced medical genomics has allowed us to study these ancient remains and even be able to look for genetic diseases. To our surprise, we did not find any differences during the last 35,000 years, even though some individuals alive during the Ice Age had low genetic diversity.

Now we have accessed everything possible from these remains. Peştera Muierii 1 is important from a cultural history perspective and will certainly remain interesting for researchers within other areas, but from a genetic perspective, all the data is now available.”

Svensson E. et al. (2021); Genome of Peştera Muierii skull shows high diversity and low mutational load in pre-glacial Europe, Current Biology, May 18 (11 a.m. ET) DOI: 10.1016/j.cub.2021.04.045, https://www.cell.com/current-biology/fulltext/S0960-9822(21)00592-3

 
 

Contacts and sources:
Mattias Jakobsson, Professor at the Department of Organismal Biology
Uppsala University

 



Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world.

Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.

"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.

Please Help Support BeforeitsNews by trying our Natural Health Products below!


Order by Phone at 888-809-8385 or online at https://mitocopper.com M - F 9am to 5pm EST

Order by Phone at 866-388-7003 or online at https://www.herbanomic.com M - F 9am to 5pm EST

Order by Phone at 866-388-7003 or online at https://www.herbanomics.com M - F 9am to 5pm EST


Humic & Fulvic Trace Minerals Complex - Nature's most important supplement! Vivid Dreams again!

HNEX HydroNano EXtracellular Water - Improve immune system health and reduce inflammation.

Ultimate Clinical Potency Curcumin - Natural pain relief, reduce inflammation and so much more.

MitoCopper - Bioavailable Copper destroys pathogens and gives you more energy. (See Blood Video)

Oxy Powder - Natural Colon Cleanser!  Cleans out toxic buildup with oxygen!

Nascent Iodine - Promotes detoxification, mental focus and thyroid health.

Smart Meter Cover -  Reduces Smart Meter radiation by 96%! (See Video).

Report abuse

    Comments

    Your Comments
    Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

    MOST RECENT
    Load more ...

    SignUp

    Login

    Newsletter

    Email this story
    Email this story

    If you really want to ban this commenter, please write down the reason:

    If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.