HENRY - The human evolution news relay
Entries in the ' genetics ' category
Written July 13, 2008 in anthropology, cultural evolution, evolution, genetics, language, linguistics, phylogenetics
In today’s, Evolution: Education and Outreach, Anastasia Thanukos takes A Look at Linguistic Evolution:
Anyone who has ever tackled a Shakespeare play knows that English has changed substantially in the 400 years since Elizabeth I ruled England. In fact, Elizabethan English can seem like a completely different language from the one we speak today. Just try describing [...]
Written July 9, 2008 in africa, americas, anthropology, europe, genetics, human prehistory, mtDNA
Scientific American covers the human diaspora in a nice broad-brush overview:
Fifty or sixty thousand years ago a small band of Africans—a few hundred or even several thousand—crossed the strait in tiny boats, never to return.
The reason they left their homeland in eastern Africa is not completely understood. Perhaps the climate changed, or once abundant shellfish [...]
Written July 4, 2008 in anthropology, cultural evolution, europe, evolution, genetics, human prehistory, it-was-better-in-my-day, language, music, stupidity
….and the award for the stupidest science story I’ve seen in months goes to LiveScience.com for “Cave Men Loved to Sing“, in which we’re told that our cave-dwelling ancestors used echo-location:
With only dull light available from a torch, which couldn’t be carried into very narrow passages, the ancient hunters had to use their voices like [...]
Today’s Science sees the publication of a phylogenomic study of 196 bird species, which has some rather marked differences to the traditional phylogenies of bird species. Abstract says -
Deep avian evolutionary relationships have been difficult to resolve as a result of a putative explosive radiation. Our study examined ~32 kilobases of aligned nuclear DNA sequences [...]
Written June 24, 2008 in anthropology, cultural evolution, evolution, genetics, human prehistory, people
Paul Ehrlich talks about his recent study of Polynesian canoes, and whether human culture evolves via natural selection:
Biologists have a pretty good idea of both how flies become resistant to DDT and how humans and primates have diverged over time. That’s because the mechanism underlying these processes is the same. Using evolution we can understand [...]
Intraspecific phylogenetic analysis of Siberian woolly mammoths using complete mitochondrial genomes
In PNAS: Intraspecific phylogenetic analysis of Siberian woolly mammoths using complete mitochondrial genomes (doi):
We report five new complete mitochondrial DNA (mtDNA) genomes of Siberian woolly mammoth (Mammuthus primigenius), sequenced with up to 73-fold coverage from DNA extracted from hair shaft material. Three of the sequences present the first complete mtDNA genomes of mammoth clade II.
Analysis [...]
John Hawks has a nicely detailed discussion about handling exponential growth in demographic models. Very interesting, and hopefully he’ll keep them coming:
Exponential growth is a feature of current human populations, and was may represent how the human population behaved during some episodes of its demographic history. However, “exponential” can mean different things to different people, [...]
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