Definition of "haplogroup" [haplogroup]

• A group of closely related haplotypes. (noun)

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• "Most recently which, in this context, means fifteen thousand to twenty thousand years ago, nearly half of the people carrying the I1a haplotype were located in Scandinavia, leading some to refer to haplogroup I1a as a “Viking haplogroup.”"
• "The results showed that King Tut belonged to a genetic profile group, known as haplogroup R1b1a2, to which more than 50 per cent of all men in Western Europe belong, indicating that they share a common ancestor."
• "Identifying men carrying the variation, known as haplogroup I, could lead to more targeted preventive treatment, researchers believe."