Ancient DNA analysis sheds light on the dark events of medieval Spain

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An international team of researchers, including geneticists, archaeologists and archaeologists, led by the Archaeological Research Group at the University of Huddersfield, has published the genome sequence of Al Andals, a unique individual in Islamic Medieval Spain. The result became clear. A brutal event that happened in medieval Spain.

Discovered in the ruins of an 11th-century Islamic cemetery in the city of Segorbe near Valencia, Spain, the person is known to local archaeologists as the “Giant of Segorbe” due to his extraordinary height.

His skeleton suggested that he may have African ancestry. Most of Spain has been gradually conquered by the Arabs and Amazighs of Northwest Africa since the 8th century and has become one of the major centers of medieval European civilization.

Ancient DNA analysis was performed by Dr. Marina Silva and Dr. Gonzalo Oteo-Garcia, who were working on the Dr. Leverhulme Trust Scholarship Program at the University of Evolutionary Genomics.

They found that the “giant” had a North African genetic lineage that was highly specific for both his male and female pedigrees (Y chromosome and mitochondrial DNA). This suggested that his recent ancestors were in fact within a new Islamized Amazigh group of medieval Northwest Africa.

However, a more detailed investigation revealed a more complex situation. Male and female pedigrees make up a small part of our entire ancestors. That is, from the father of the father of the father and the mother of the mother of the mother.

His genome-wide ancestors have shown that he also has a significant amount (perhaps more than half) of local Spanish ancestors on his chromosomes. In addition, stable isotope analysis suggested that he probably grew up locally. In other words, the Amazigh ancestors of the “giants” were actually immigrants from previous generations. Therefore, he belonged to a settled community of a perfect mix of local Spaniards and immigrant North African ancestors.

Particularly striking was the fact that Professor Martin Richards, director of the University’s Center for Evolutionary Genomics, was very different from the modern Amazighians, who have little or no genetics. I made it. heritage..

This can be explained by the changing political situation after the reconquest of Christianity in Spain, as Dr. Oteo Garcia, who recently started working at the University of Parma, explained: Muslims who have already forcibly converted to Christianity Resettlement It altered the genetic variation in the region by people further north, who had few ancestors in North Africa. ”

Dr. Silva, who currently works at the Francis Crick Institute in London, said: “The impact of this dramatic change in population due to brutal political decisions hundreds of years ago can finally be witnessed directly using ancient DNA, as seen here.” “Segorbe Giants” and their contemporaries’ ancestors. ”

Genetic ancestors and risk of high blood pressure

For more information:
Marina Silva et al., Biomolecular insights on North African ancestry, mobility, and diet in 11th-century Al-Andalus, Science report (2021). DOI: 10.1038 / s41598-021-95996-3

Quote: Ancient DNA analysis was obtained from on September 23, 2021 in Medieval Spain (September 23, 2021). Sun) shines a light on the dark event

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Ancient DNA analysis sheds light on the dark events of medieval Spain

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