BIOL SCI 150 Lecture Notes - Lecture 17: Mitochondrial Eve, Human Genetic Variation, Y Chromosome
14 Mar 2018
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Document Summary
The most recent common ancestor of all currently living humans in the maternal line. Probably lived around 200,000 years ago in africa. Has a certain mitochondrial sequences that has been passed down through every generation since then. Essentially, a haplogroup is a term used to describe a group of mitochondrial sequences that are more closely related to one another than to others. A family of mtdna that traces back to a single common ancestor. Everyone started out with mitochondrial eve, then different lineages and haplogroups emerge in accordance to the new mutations they"ve accumulated. Geneticists use global haplogroup distributions to trace migrations of peoples. L1, l2, l3 are haplogroups that represent early development of species in africa - represent the spread of the species. L3 is the haplogroup of the people that migrated out of africa to the. Middle east and subsequently europe and asia (l1/l2 stayed in africa)
