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Keyword: mitochondrialeve

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  • Genetic Adam and Eve Could Have Been Contemporaries, Scientists Say

    08/05/2013 8:55:32 AM PDT · by marshmallow · 86 replies
    The Christian Science Monitier ^ | 8/2/13 | Elizabeth Barber
    New research published in Science shows that our most recent common female and male ancestors could have been alive at the same time.Thousands of years ago, somewhere in Africa, lived a man who – probably – had no idea that he, among all the other men in his group, would go on to become humankind’s most recent common male ancestor. Scientists would call him “Adam.” Now, a new paper published in the journal Science significantly narrows the time during which Adam could have lived – about 120,000 to 156,000 years ago – putting him in about the same time period...
  • Researchers Shed New Light on Genetic Adam and Eve

    08/03/2013 6:15:52 PM PDT · by SunkenCiv · 34 replies
    Popular Archaeology ^ | Thu, Aug 01, 2013 | Science
    Previous genetic research has indicated the existence of two ancient modern human individuals who passed their genes along to all humans living today... "Mitochondrial Eve"... between 190,000 and 200,000 years ago, and ... "Y-chromosomal Adam", between 50,000 and 115,000 years ago. Now, a team of researchers led by Stanford University's Carlos Bustamente and David Poznik have redefined the ranges for Y-chromosomal Adam and Mitochondrial Eve, placing them at 120,000 to 156,000 years ago and 99,000 to 148,000 years ago, respectively. The most significant finding relates to the relative timing of their existence... ...The researchers compared Y-chromosome sequences among 69 men...
  • 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...