Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In human genetics, Haplogroup Q (M242) is a Y- chromosome DNA haplogroup. Haplogroup Q is one of the two branches of haplogroup P (M45). Haplogroup Q is believed to have arisen in Central Asia approximately 15,000 to 20,000 years ago. This haplogroup has many diverse haplotypes despite its low frequency among most populations outside of the Americas. There also are over a dozen subclades that have been sampled and identified in modern populations.

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