On mtDNA diversity within Africa, before the out of Africa migrations

Dienekes, Blaine, Razib, and Simon have all chimed in introducing us to a new paper from the American Journal of Human Genetics. It seems like a really interesting one, one that takes mtDNA to construct a phylogeny used to investigate what was happening to early Homo sapiens genetic diversity and populations within Africa. This study... Continue Reading →

Recent Nature and Science papers on Patterns in Human Genetic Variation

In last week's issue of Nature, we saw two really important papers on large scale human population genetic structure be published. The first was, "Proportionally more deleterious genetic variation in European than in African populations," and the second was, "Genotype, haplotype and copy-number variation in worldwide human populations." Not to be outdone by Nature, Science... Continue Reading →

Again on Ancient African Megadroughts

PNAS finally published one of the two sets of ecological explanations for the Out-of-Africa theory in "East African megadroughts between 135 and 75 thousand years ago and bearing on early-modern human origins." The second publication "Ecological consequences of early Late Pleistocene megadroughts in tropical Africa" also came out earlier this week. If you didn't catch... Continue Reading →

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