Why Melanesians are blonde resolved?

Sort of and possible. I’ve been talking about this for years, and Greg Cochran points me to an abstract at the human genetics conference referenced earlier. Novel coding variation at TYRP1 explains a large proportion of variance in the hair colour of Solomon Islanders: The Solomon archipelago comprises over 1,000 islands located east of Papua […]

Survey on personal genomics

Just got this email, and I thought I would share with my readers: I’m a biologist from Germany and together with 2 fellow biologists I’m currently working on a project that evaluates the sharing of raw data from DTC-genetic-testing companies like 23andme. I was genotyped myself and have already published the data set on GitHub […]

“Aryan invasion”

Estimating a date of mixture of ancestral South Asian populations:

Linguistic and genetic studies have shown that most Indian groups have ancestry from two genetically divergent populations, Ancestral North Indians (ANI) and Ancestral South Indians (ASI). However, the date of mixture still remains unknown. We analyze genome-wide data from about 60 South Asian groups using a newly developed method that utilizes information related to admixture linkage disequilibrium to estimate mixture dates. Our analyses suggest that major ANI-ASI mixture occurred in the ancestors of both northern and southern Indians 1,200-3,500 years ago, overlapping the time when Indo-European languages first began to be spoken in the subcontinent. These results suggest that this formative period of Indian history was accompanied by mixtures between two highly diverged populations, although our results do not rule other, older ANI-ASI admixture events. A cultural shift subsequently led to widespread endogamy, which decreased the rate of additional population mixtures.

I will put a modest amount of money on the proposition that there were at least two admixture events, and that their LD based methods are picking up the second Indo-European one. If it was just one admixture event, then you have to accept the proposition that South Indian tribals are at least ~30% Indo-European in ancestry. Not impossible, but seems unlikely.

India vs. China

India Measures Itself Against a China That Doesn’t Notice:

“Indians are obsessed with China, but the Chinese are paying too little attention to India,” said Minxin Pei, an economist who was born in China and who writes a monthly column for The Indian Express, a national daily newspaper. (No Indian economists are known to have a regular column in mainland Chinese publications.)

Most Chinese are unconcerned with how India is growing and changing, because they prefer to compare their country with the United States and Europe, said Mr. Pei, a professor at Claremont McKenna College near Los Angeles. He says he has tried to organize conferences about India in China but has struggled to find enough Chinese India experts.

Liu Yi, a clothing store owner in Beijing, echoed the sentiments of a dozen Chinese people interviewed in Beijing and Shanghai, in dismissing the idea that the two countries could be compared. Yes, he said India was a “world leader” in information technology but it also had many “backward, undeveloped places.”

“China’s economy is special,” Mr. Liu said. “If China’s development has a model, you could say it’s the U.S. or England.”

The sentiments are real. But the Indian assumption that the difference is the governance style of China is false. It’s the aggregate difference in human capital.

The Indian elites have presided over a situation where their nation is the world capital of cretinism.

Tutsi genetics, ii

In my post below, Tutsi probably differ genetically from the Hutu, there were many comments. Some I did not post because they were rude, though they did ask valid questions. I will address those issues, but let me quote one comment:

That’s an interesting possibility, but this admixture run didn’t split the non-hunter-gatherer Africans that well. In one of your previous analyses on East Africa you managed to get a pretty accurate ‘Afro-Asiatic/Cushitic’ and ‘Nilotic’ cluster. Is it possible that you could run this Tutsi sample using the same admixture settings as in the ‘Flavors of Afro-Asiatic’ blog post to see if he carries a significant Nilotic component or is mainly Bantu & Cushitic derived?

So I replicated ADMIXTURE runs for many of the same populations as I did in my post, Flavors of Afro-Asiatic. I also pared down the population set and generated a PCA with EIGENSOFT. Before I get to those results, let me tackle the questions.

1) “Are the Luhya suitable proxies for the Hutus?”

Probably. The reason is that Bantu-speaking populations, from the Congo to South Africa, are surprisingly similar. Not only that, but these populations are very distinctive from groups which are close them …

Where is the ArXiv for X?

Derek Lowe asks “Why Isn’t There an ArXiv For Chemistry?” Where indeed. A few years ago I went to a talk given by Michael Eisen and asked him about why the biological sciences didn’t have an ArXiv, and one of his explanations was that intellectual property was more of a concern in this area (e.g., pharmaceutical funded research). That sounds plausible enough to me. But the existence of ArXiv still should serve as a starting point for people outside of the physical and mathematical sciences in terms of the possibilities. Much of the discussion around Joe Pickrell’s post ‘Why publish science in peer-reviewed journals?’ seemed to operate in a world where ArXiv didn’t exist. And it’s not just ArXiv, SSRN makes it easy to get papers in social science. We have the technology, and we see the possibilities. There are obstacles, but let’s not pretend as if we don’t have a model for some success.

They’re called “peer reviewers”

George Monbiot’s piece, Academic publishers make Murdoch look like a socialist, is making the rounds. This paragraph jumped out at me:

Murdoch pays his journalists and editors, and his companies generate much of the content they use. But the academic publishers get their articles, their peer reviewing (vetting by other researchers) and even much of their editing for free. The material they publish was commissioned and funded not by them but by us, through government research grants and academic stipends. But to see it, we must pay again, and through the nose

It reminded me of this scene from the South Park episode Crack Baby Athletic Association (click):

Crack Baby Athletic AssociationTags: SOUTHPARKEric Cartman,Kyle Broflovski,more…