GENGHIS KHAN has been identified as the most successful alpha male in human history, according to a book by an Oxford geneticist.

The Mongol emperor inseminated so many women in his 40-year career raping and pillaging across Asia that he created a pool of at least 16m male descendants who today carry his Y, or male, chromosome.

British men are now being offered the opportunity of genetic testing by Oxford scientists to see if they have inherited Genghis’s “super-Y”, which conferred such power on its originator.

Bryan Sykes, professor of human genetics at Oxford University and author of Adam’s Curse, a study of the Y chromosome, believes recent migration could have spread a few of Genghis’s super-virile progeny as far as the British Isles.

Sykes, who runs Oxford Ancestors, a commercial enterprise that analyses people’s DNA and traces their geographical origins, said: “Genghis Khan was probably the most successful breeder of males ever, and there is every possibility that men here will carry his chromosome.”

The Y chromosome is passed unchanged from father to son and, in the 13th century, Genghis’s empire stretched from Mongolia to Afghanistan, Russia and Iran.

Oxford scientists took samples of male DNA in 16 locations across Asia and found the same Y chromosome in 8% of the population.

The idea that the chromosome could come from Genghis appeared to be confirmed by the finding that it was carried by a third of the Hazara tribe, which lives on the borders of Afghanistan and Pakistan. The tribe has always claimed to descend from Genghis.

The Mongol ruler was born into a local clan that had lost most of its influence by the time he was in his teens. He set about rebuilding a power base that grew into a 200,000-strong army of legendary brutality.

Entire cities were slaughtered while the Mongol hordes looted their way across Asia. But while Genghis allowed his commanders their pick of the material spoils, he demanded the women were brought to him for systematic rape or to serve as concubines.

By the time of his death aged around 65, Genghis’s empire stretched from the South China Sea to the Persian Gulf.

His four legitimate sons appear to have continued the family tradition of sexual excess and empire-building, as did two of his grandsons: Kublai Khan conquered southern China and founded the Yuan dynasty of Chinese emperors and Batu sacked Kiev and invaded Hungary and Poland.

Their dissemination of Genghis’s chromosome no doubt helped to make it the most successful in history, which is why it appears to be carried by more men on the planet than any other version.

Researchers have also established an apparent link between frequency of sexual intercourse and the birth of sons, which is why Genghis would have produced more male progeny. More boys than girls are born in the first year of marriage when couples are assumed to have more sex.

Other studies have found that frequent intercourse raises testosterone levels, increasing the chances of the Y chromosome being successful.

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