Just three percent of prehistoric humans mated with their family compared to TEN PERCENT of today’s global marriages that occur between first or second cousins, DNA tests find

- Advertisement -


  • Experts analyzed the DNA of 1,785 humans who lived in the past 45,000 years
  • They found that only 54 individuals had the traits to be cousins ​​of their parents.
  • Research says this compares to more than 10 percent of all modern global marriages between first or second cousins.

- Advertisement -

DNA analysis of prehistoric humans shows that mating between cousins ​​is more common today than it was about 45,000 years ago.

Scientists from the Max Planck Society analyzed DNA from the remains of 1,785 individuals and found that only 54 subjects, or three percent, had the characteristic traits of their parents being cousins.

advertisement

This compares to more than 10 percent of all modern global marriages between first or second cousins.

The team noted that the 54 individuals with parents who were cousins ​​did not cluster in space or time, showing that cousin mating was sporadic events in the ancient population studied.

- Advertisement -

DNA analysis of prehistoric humans suggests mating between cousins ​​is more common today than it was 45,000 years ago

According to the study published in nature communication, the only ‘archaeological cluster (defined in annotations from the source dataset, modified for readability) with more than two individuals’ is the ‘Iron Age Republican Rome’.

The cousins ​​who accompanied the parents also lived in the Pontic-Caspian Steppe region between 2600 and 1500 BC.

and another group was identified in the late pre-contact Andes region.

In particular, the long ROH . 11 out of 54 people with [Runs of Homozygosity, which is a sign parents were cousins] The islands are located on: sorted by time and using cluster annotations from publicly available datasets (modified for readability) These are: ‘Sardinia Early Copper Age’, ‘Sweden Megalithic,’ England Neolithic,’ ‘Chile Western Archipelago,” “England c-EB,” “Russian Bolshoi,” “Vanuatu 1100 BC,” “Argentina Tierra del Fuego,” and “Indian Great Andaman,” reads the study.

To compare ancient DNA with those of today, the team conducted the same analysis with 1,941 modern individuals and found that 176 of them had ROH.

Scientists from the Max Planck Society analyzed DNA from the remains of 1,785 individuals and found that only 54 subjects, or three percent, had the characteristic traits of their parents being cousins.

Scientists from the Max Planck Society analyzed DNA from the remains of 1,785 individuals and found that only 54 subjects, or three percent, had the characteristic traits of their parents being cousins.

The cousins ​​who accompanied the parents also lived in the Pontic-Caspian Steppe (top left) region between 2600 and 1500 BC.

The cousins ​​who accompanied the parents also lived in the Pontic-Caspian Steppe (top left) region between 2600 and 1500 BC.

“Contrary to ancient data, there are several geographic groups of long ROH, mainly in the present-day Near East, North Africa, Central/South Asia and South America,” the study said.

‘This sign was first described and reflects the estimated prevalence of cousin marriages.’

To uncover these results, the team devised a new computational tool to screen ancient DNA for parental relatedness.

This method detects long stretches of DNA that are identical in two DNA copies, one inherited from the mother and one from the father.

The closer the parent is, the longer and more abundant such segments are.

The study’s lead researcher, Harald Ringbauer of the Max Planck Institute for Evolutionary Anthropology, said in a statement: ‘Applying this new technique we can examine genomes ten times more ancient than previously thought.’

The only 'archaeological cluster (defined in annotations from the source dataset, modified for readability)' with more than two individuals is 'Iron Age Republican Rome', according to the study published in Nature Communications.

The only ‘archaeological cluster (defined in annotations from the source dataset, modified for readability)’ with more than two individuals is ‘Iron Age Republican Rome’, according to the study published in Nature Communications.

In addition to identifying mating close relatives, the new method also allowed researchers to study background relatedness.

Such affiliation usually results from many unknown distant relationships within small populations.

As an important result, the researchers found a substantial demographic impact of the technological innovation of agriculture.

This was followed by a marked drop in parental affiliation, always in the background, indicating increasing population size.

By analyzing the time zones of more than a dozen geographic regions around the world, the researchers expanded on previous evidence that societies that practiced farming compared to hunter-gatherer subsistence strategies had increased population sizes.

.

- Advertisement -
Mail Us For  DMCA / Credit  Notice

Recent Articles

Stay on top - Get the daily news in your inbox

Related Stories