Y-Chromosomal Adam (Genetic Adam)

The Y chromosome passes from father to son largely unchanged. By sequencing Y chromosomes from men around the world, geneticists can reconstruct a paternal family tree that, like the maternal one, converges on a single ancestor — nicknamed "Y-chromosomal Adam" or "Genetic Adam." The 2013 Poznik et al. study in Science and the large 2015 Karmin et al. study in Genome Research are the standard references. Earlier work placed Y-Adam much later than Mitochondrial Eve; newer high-coverage sequencing has pulled the two estimates much closer together, with current mainstream estimates roughly 100,000–200,000 years ago. As with Eve, the dates depend on assumed mutation rates and are still actively debated; the convergence on a single paternal ancestor is not. This is striking. The standard evolutionary expectation was a large breeding population with many independent male lineages surviving. Instead, the data show one man's Y chromosome standing behind every living male — exactly the pattern Genesis describes, where humanity descends from one father (Adam) and is later reduced again to the line of one man (Noah) through the flood (Genesis 5; 9:18–19). Genesis says God "made of one blood all nations of men" (Acts 17:26, KJV) and that humanity has a common father in Adam (1 Corinthians 15:22, 45). Y-chromosome genetics independently arrives at the same picture: one man stands at the root of every paternal line alive today.

Y-chromosome genetics points to a single patrilineal ancestor for every man alive today. That is a striking match with the Bible's claim that all humanity descends from one man — Adam, and later Noah (Acts 17:26; 1 Corinthians 15:22; Genesis 9:18–19).

• Genesis 5:1-5— Adam, the first man and father of humanity.
• Genesis 9:18-19— After the flood, all humanity descends from Noah's sons.
• 1 Corinthians 15:22— "In Adam all die."
• Acts 17:26— One man, every nation.

• ·Poznik et al., 'Sequencing Y chromosomes resolves discrepancy in time to common ancestor of males versus females', Science 341 (2013): 562–565
• ·Karmin et al., 'A recent bottleneck of Y chromosome diversity coincides with a global change in culture', Genome Research 25 (2015): 459–466
• ·Mendez et al., 'An African American paternal lineage adds an extremely ancient root to the human Y chromosome phylogenetic tree', AJHG 92 (2013): 454–459