Genetics and Human Evolution: Large-Scale Data (HSC SSCE Biology): Flashcards
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Anthropological genetics
Anthropological genetics
Studies human evolution via DNA, history, archaeology, linguistics
Four evolutionary forces creating diversity
Four evolutionary forces creating diversity
Mutation, natural selection, genetic drift, gene flow
Multiregional hypothesis timeframe
Multiregional hypothesis timeframe
2 million years ago (Homo erectus left Africa)
Replacement hypothesis timeframe
Replacement hypothesis timeframe
100,000 years ago (Out of Africa)
mtDNA inheritance pattern
mtDNA inheritance pattern
Maternal line only, no recombination
Haplogroups
Haplogroups
Groups sharing mtDNA mutations from common ancestor
Population with most genetic diversity
Population with most genetic diversity
African populations (L haplogroups)
Neanderthal DNA % in Europeans/Asians
Neanderthal DNA % in Europeans/Asians
About 2%
Why Sub-Saharan Africans lack Neanderthal DNA
Why Sub-Saharan Africans lack Neanderthal DNA
Ancestors stayed in Africa, never encountered Neanderthals
Higher mtDNA divergence meaning
Higher mtDNA divergence meaning
Older population (more time for mutations)