In human genetics, Y-chromosomal Adam (Y-MRCA) is the most recent common ancestor (MRCA) from whom all living people are descended patrilineally (tracing back only along the paternal lines of their family tree). Recent studies report that Y-chromosomal Adam lived as early as around 142,000 years ago. Older studies estimated Y-MRCA as recent as 60,000 years ago. All living humans are also descended matrilineally from Mitochondrial Eve who is thought to have lived earlier, about 190,000–200,000 years ago. Y-chromosomal Adam and Mitochondrial Eve need not have lived at the same time.
Read more about Y-chromosomal Adam: Nomenclature, Hypothesis, Variable Adam, Time Frame
Famous quotes containing the word adam:
“Let those talk of poverty and hard times who will in the towns and cities; cannot the emigrant who can pay his fare to New York or Boston pay five dollars more to get here ... and be as rich as he pleases, where land virtually costs nothing, and houses only the labor of building, and he may begin life as Adam did? If he will still remember the distinction of poor and rich, let him bespeak him a narrower house forthwith.”
—Henry David Thoreau (1817–1862)