Ancient Mesopotamia had genetic links to the Indian sub-continent

Mesopotamia – image BBC History

Ancient Mesopotamia (from the Greek meaning “between two rivers”) comprised the region watered by the Tigris and the Euphrates and contained at different times the ancient civilizations of the Sumer, the Akkadian, the Babylonian, and the Assyrian empires dating from 6,500 years ago till about 2,500 years ago.

But new genetic research on dental remains (teeth) of four individuals who lived between 4,500 years ago to 1,600 years ago shows genetic linkages  – which are not present in current populations – with peoples from Tibet, the Himalayas, India and Pakistan. A second paper  studied “fifty-nine dental non-metric traits on a sample of teeth from 350 human skeletons excavated at three sites in the lower middle Euphrates valley. This showed a stable population until after the Mongolian invasion which resulted in a large depopulation of northern Mesopotamia in the 13th century CE. The final major change occurred during the 17th century with Bedouin tribes arriving from the Arabian Peninsula.”

The genetic connection between Mesopotamia and India suggests the movement of people from the Indian sub-continent to Mesopotamia around 25,000 to 30,000 years ago.

Distribution of haplogroup L of Y-Chromosome – Possible time of origin 25,000-30,000 years BP. Image. Wikimedia

The two papers are:

Past Horizons reports: 

The continuing debate regarding the origins of people inhabiting ancient Mesopotamia during the region’s long history led the authors of a new report published in the Open Access journalPLoS ONE to attempt an isolation and analysis of mtDNA sequences from the area.

Ancient DNA methodology was applied to analyse sequences extracted from freshly unearthed remains (teeth) of 4 individuals deeply deposited in the slightly alkaline soil of  Tell Ashara (ancient Terqa) and Tell Masaikh (ancient Kar-Assurnasirpal) – Syrian archaeological sites, both in the middle Euphrates valley. …..

Although it is not possible with DNA analysis to reconstruct the details of an individual’s life, it can provide insights into his/her ancestry. In ideal conditions, the fossil sequences are isolated from remains unearthed in permafrost or temperate regions and only in rare circumstances from skeletal material found in a subtropical arid climate, as it is suspected that the potential is highly limited in such cases.

Thus, only scarce datasets from the Mesopotamia region are available, but using ancient DNA methodology, the team were able to confirm the possibility of isolating amplifiable sequences from the skeletons under just such challenging conditions. In the case of one of the studied specimens the researchers analysed both mtDNA and nuDNA sequences.

Three others were analysed only to confirm their origin on the basis of HVR-I sequence. Studied remains were excavated at two archaeological sites in the middle Euphrates valley and dated between the Early Bronze Age and the Late Roman period (between 2500 BCE and 500 CE).

The studied individuals carried mtDNA haplotypes corresponding to the M4b1, M49 and/or M61 haplogroups, which are believed to have arisen in the area of the Indian subcontinent during the Upper Palaeolithic and are absent in people living today in Syria. However, these same haplogroups are present in people inhabiting today’s Tibet, Himalayas, India and Pakistan.

The suggestion is that these analysed remains from Mesopotamia belonged to people with a genetic affinity to the Indian subcontinent as the distribution of identified ancient haplotypes indicates a solid link with populations from the region of South Asia-Tibet (Trans-Himalaya).

This may represent either that the individuals are descendants of migrants from much earlier times (Palaeolithic), spreading the clades of the macrohaplogroup M throughout Eurasia and founding regional Mesopotamian groups like that of Terqa, or they are from merchants moving along trade routes passing near or through the region.

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About ktwop

Scientist, technologist, salesman, manager, executive and now a consultant and author.
This entry was posted in Ancestors, Hunter-gatherer, Peopling the world and tagged , , , , . Bookmark the permalink.

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