[ Young Earth ] Evidence for a Human Y Chromosome Molecular Clock: Pedigree-Based Mutation Rates Suggest a 4,500-Year History for Human Paternal Inheritance

[AIG.com]

Pedigree-based mutation rates act as an independent test of the young-earth creation and evolutionary timescales.

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[Barbarian]

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. The term Y-MRCA reflects the fact that the Y chromosomes of all currently living human males are directly derived from the Y chromosome of this remote ancestor. The analogous concept of the matrilineal most recent common ancestor is known as "Mitochondrial Eve" (mt-MRCA, named for the matrilineal transmission of mtDNA), the most recent woman from whom all living humans are descended matrilineally. 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.

Estimates of the time when Y-MRCA lived have also shifted as modern knowledge of human ancestry changes. In 2013, the discovery of a previously unknown Y-chromosomal haplogroup was announced,[1] which resulted in a slight adjustment of the estimated age of the human Y-MRCA.[2]

By definition, it is not necessary that the Y-MRCA and the mt-MRCA should have lived at the same time.[3] While estimates as of 2014 suggested the possibility that the two individuals may well have been roughly contemporaneous (albeit with uncertainties ranging in the tens of thousands of years),[4] the discovery of archaic Y-haplogroup has pushed back the estimated age of the Y-MRCA beyond the most likely age of the mt-MRCA. As of 2015, estimates of the age of the Y-MRCA range around 200,000 to 300,000 years ago, roughly consistent with the emergence of anatomically modern humans.[

Y-chromosomal Adam - Wikipedia

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[Truthfrees]

Pedigree-based mutation rates act as an independent test of the young-earth creation and evolutionary timescales.

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