Why Tibetans breathe so easy up high
I said yesterday I would say a bit more about the new paper on rapid recent high altitude adaptation among the Tibetans when I’d read the paper. Well, I’ve read it now. Sequencing of 50 Human Exomes Reveals Adaptation to High Altitude:
Residents of the Tibetan Plateau show heritable adaptations to extreme altitude. We sequenced […]
“Here be dragons”
I just stumbled onto two amusing articles, Ancient legends once walked among early humans?, and The discovery of material evidence of a distinct hominin lineage in Central Asia as recently as 30,000 years ago is no surprise. The second is a letter from a folklorist:
Sir, The discovery of material evidence of a distinct hominin lineage […]
Loading up on human evolution in PNAS
Click the Early Edition and control-f “Sackler.”
Evolutionary fitness & nutrition
Russ Roberts recently had a discussion on Econtalk with Arthur de Vany. A lot of it covered baseball and social science, but he also spent a lot of time on “evolutionary fitness” (see the website at the link). I agree with a lot of what he had to say, but felt that some of his […]
Others in Siberia?
The complete mitochondrial DNA genome of an unknown hominin from southern Siberia:
With the exception of Neanderthals, from which DNA sequences of numerous individuals have now been determined…the number and genetic relationships of other hominin lineages are largely unknown. Here we report a complete mitochondrial (mt) DNA sequence retrieved from a bone excavated in 2008 in […]
The cultural animal as an evolving animal
Nicholas Wade has an article in The New York Times, Human Culture, an Evolutionary Force. One point to highlight:
By this criterion, many of the genes under selection seem to be responding to conventional pressures. Some are involved in the immune system, and presumably became more common because of the protection they provided against disease. Genes […]
Ostrich shell art in South Africa 60,000 years ago
There’s a new paper in PNAS reviewing the tradition of etching on ostrich shells. Since it’s PNAS, the paper isn’t on the website, but Edward Edmund Yong is able to cover the major points thanks to his access. This stuff is of interest because there was a long time lag between the emergence of anatomically […]
The Hobbits Six Years On
The Guardian has a long piece about the hobbits of Flores, and how they may have split from from the lineage which led to H. sapiens further back in time than had previously been assumed. In other words, where the hobbits had been theorized to have been a local adaptation of H. erectus, now the […]
Shellfish & the human bottleneck
How shellfish saved the human race:Turns out, somewhere between 130,000 to 190,000 years ago, the human species was reduced to less than 1000 breeding individuals–just a few thousand people in total. Ancient, naturally driven climate change pushed our…
FOXP2 in Nature
Human-specific transcriptional regulation of CNS development genes by FOXP2:…It has been proposed that the amino acid composition in the human variant of FOXP2 has undergone accelerated evolution, and this two-amino-acid change occurred around the ti…