Gene Expression

Archives for March, 2009

How big does the N need to be?

Estimating the number of unseen variants in the human genome: …Consistent with previous descriptions, our results show that the African population is the most diverse in terms of the number of variants expected to exist, the Asian populations the least diverse, with the European population in-between. In addition, our results show a clear distinction between…

Women are the genetic future

Dan MacArthur has a post up where he discusses 23andMe’s outreach to “mommy bloggers.” This makes economic sense for any firm in this field. There’s only so much money to be made out of telling blue eyed nerds that they carry the gene for blue eyes. To use a computer analogy the way you can…

Facebook is not a revolution

A follow up to my earlier post on information technology, In The Age Of Facebook, Researcher Plumbs Shifting Online Relationships: “You can ask somebody, ‘Of your 300 Facebook friends how many are actually friends?’ and people will say, ‘Oh, 30 or 40 or 50,’ “ said Baym. “But what having a lot of weak-tie relationships…

More skepticism of natural selection

In the wake of last week’s paper, looks like another one is coming down the pipe, Hundreds of Natural-Selection Studies Could be Wrong, Study Demonstrates: “These statistical methods have led many scientists to believe that natural selection acted on many more genes in humans than it did in chimpanzees, and they conclude that this is…

Paternity rates by population

A few years ago a paper came out, How Well Does Paternity Confidence Match Actual Paternity?: Evolutionary theory predicts that males will provide less parental investment for putative offspring who are unlikely to be their actual offspring. Cross‐culturally, paternity confidence (a man’s assessment of the likelihood that he is the father of a putative child)…

One gene controlling ant behavior?

Single Gene Shapes the Toil of Ants’ Fighter and Forager Castes: Researchers studying the social behavior of ants have found that a single gene underlies both the aggressive behavior of the ant colony’s soldiers and the food gathering behavior of its foraging caste. The gene is active in soldier ants, particularly in five neurons in…

The paper is pretty straightforward, Copy number variation in African Americans: Employing a SNP platform with greater than 500,000 SNPs, a first-generation CNV map of the African American genome was generated using DNA from 385 healthy African American individuals, and compared to a sample of 435 healthy White individuals. A total of 1362 CNVs were…

Every Man A Media Mogul!

Portfolio & Wired have a one-two punch on the future of broadband up. I’ve read that it takes 3-4 months for a salary increase to be “discounted” so that individuals move up the consumption ladder and no longer feel flush. With internet speed the latency seems far more attenuated; there’s always a new application around…

Science & liberalism

Faith in science and social conservatism: Except for crime and gun control, faith in science is associated with socially liberal positions. For guns and crime, the direction of the relationship is liberal, but the relationships are not statistically significant. I’ve dug through the GSS on this and this seems about right. Even on topics where…

Creationism in America & Europe

So I’m reading/hearing about something flaring up in Texas again in regards to Creationism. I always get these strange “articles” in my RSS for the “evolution” query on Google Alerts where an uninformed columnist rambles on how the theory has been disproved or brought into doubt. These arguments are not my brief, I’ll leave that…