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  • Human Y Chromosome Much Older Than Previously Thought

    03/21/2013 7:05:11 AM PDT · by Renfield · 15 replies
    UANews ^ | 3-1-2013 | Daniel Stolte
    UA geneticists have discovered the oldest known genetic branch of the human Y chromosome – the hereditary factor determining male sex. The new divergent lineage, which was found in an individual who submitted his DNA to Family Tree DNA, a company specializing in DNA analysis to trace family roots, branched from the Y chromosome tree before the first appearance of anatomically modern humans in the fossil record. The results are published in the American Journal of Human Genetics. "Our analysis indicates this lineage diverged from previously known Y chromosomes about 338,000 ago, a time when anatomically modern humans had not...