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  • human
  • In human genetics , the Y-chromosomal most recent common ancestor ( Y-MRCA , informally known as Y-chromosomal Adam ) is the most recent common ancestor (MRCA) from whom all currently living men are descended patrilineally . (wikipedia.org)
  • As with "Mitochondrial Eve", the title of "Y-chromosomal Adam" is not permanently fixed to a single individual, but can advance over the course of human history as paternal lineages become extinct. (wikipedia.org)
  • In 2013, the discovery of a previously unknown Y-chromosomal haplogroup was announced, which resulted in a slight adjustment of the estimated age of the human Y-MRCA. (wikipedia.org)
  • baby
  • Our baby died at 15 weeks and he was able to get some tissue to test for chromosomal issues and also hopefully we might know the sex of the baby. (dailystrength.org)
  • fact
  • They were explained the benefits and risks involved in the chromosomal microarray testing, including the fact that some of the findings could be of uncertain clinical significance. (medindia.net)
  • taken
  • Y-chromosomal data taken from a Neanderthal from El SidrĂ³n , Spain produced a Y-T-MRCA of 588,000 years ago for neanderthal and Homo sapiens patrilineages, dubbed ante Adam and 275,000 years ago for Y-MRCA. (wikipedia.org)