Y-chromosomal Noah
From Wikinfo
In human genetics, Y-chromosomal Noah is the male counterpart to mitochondrial Eve: a real single male human ancestor from whom all male Y chromosomes are descended. Unlike other genes, those of the Y chromosome are passed exclusively from father to son, just as mitochondrial DNA is passed to children exclusively by their mothers.
Judging from molecular clock studies, he lived between 35,000 and 90,000 years ago years ago (100,000 years after mitochondrial Eve) when most of the world was under sheets of ice & snow. While their descendants certainly became close intimates, Y-chromosomal Noah and mitochondrial Eve never met and lived many thousands of years apart. They are named after the characters called "Noah" and "Eve" in Genesis, but should not be identified with them. Based on the DNA of peoples living in Africa today, both Y-chromosomal Noah and mitochondrial Eve are believed to have lived in Africa.
More on the process by which many lineages winnow down to one can be found in the article on mitochondrial Eve, which also elaborates on how Noah and Eve relate to the Out-of-Africa theory of human evolution.
See also
External References
- "Modern Men Trace Ancestry to African Migrants", A Gibbons, Volume 292, Number 5519, Issue of 11 May 2001, pp. 1051-1052.
- "African Origin of Modern Humans in East Asia: A Tale of 12,000 Y Chromosomes", Yuehai Ke et al, Science 2001 292: 1151-1153
External links
