Gene Expression

Archives for April, 2007

Elf-dar in the house

Check it, I was right

Chimps more evolved? – part II

The Scientist has some good quotes in a article on the chimp positive selection story from yesterday: The screen failed to find evidence for positive selection of two genes involved in brain development and cognition – ASPMM and Foxp2 – that studies have previously identified as positively selected genes in the human lineage. Zhang and…

One of the classic ways to maintain genetic variation with a population is “overdominance,” in short, a state where heterozygotes exhibit greater fitness than the homozygote genotypes. Imagine for example a locus, A, with two alleles, A1 & A2. Now, assume the fitness is distributed like so across the genotypes: A1A1 = 0.75 A1A2 =…

Chimps more evolved?

The times has a mildly stupid article up, Chimps are ahead of humans in the great evolutionary race, which just goes to show that the people writing the headlines often have no comprehension skills, or just don’t bother reading more than the first paragraph of a story. As confused as the article is it contradicts…

You know a scientist has made it to the “big time” when they are given the opportunity to write to a general audience. Some thinkers, such as Richard Dawkins, have made their name via popularization. Others, such as E.O. Wilson, only became notable figures outside of academia after having established their reputation and stature within…

Kat

…sorry about the delay this week. Been busy, will post a few more before next Friday.

Group & kin selection

I promised I’d go over the recent PNAS paper, Group selection and kin selection: Two concepts but one process. This is one of those articles where most of the heavy lifting is in the technical appendix. I’ve decided that it isn’t worth the effort to restate this verbally in detail, I looked over the algebra…

The multilevels of religion

I read Evolution for Everyone, and I was struck by how much David S. Wilson discussed religion. First, he seems to praise The Templeton Foundation quite a bit, in part because of their generous funding of his research. This isn’t to say that he has any illusions about the nature of their interests, but he…

I don’t normally blog about stuff like this, but I’ve decided to link to this story about an assault on a Sikh American veteran by a police officer. Here’s the original story posted by the Sikh American Legal Defense and Education Fund. If this sort of stuff concerns you I encourage you to link as…

Fisher, Wright & dominance

A few months ago I was posting on R.A. Fisher’s Genetical Theory of Natural Selection. I stopped because I was a bit confused as to what to do about the chapter on dominance, which was basically an exposition on a theory which has been falsified by the preponderance of data. In sum, R.A. Fisher contended…