Gene Expression

Archives for July, 2007

Google news no like

As Kevin Beck points out Google News dropped ScienceBlogs.com, but kept the Discovery Institute’s blog. If you have issues this with particular pair of decisions, tell Google.

Copy number variation & being human

Gene Duplications Give Clues to Humanness: All told, the researchers found more than 4000 genes that showed lineage-specific changes in copy number, with the numbers steadily increasing over evolutionary time. Humans, for example, only had 84 genes with increased copy numbers over those of our closet relatives. In contrast, lemurs, which have evolved for 60…

Dell Hell

Zack talks about his personal Dell Hell. I took had a Inspiron 5100, and it exhibited all the issues he has noted.

Martin Nowak, man of God

Carl Zimmer has a fascinating profile of Martin Nowak, whose work I have talked about before. Carl saves the best for last: Dr. Nowak sometimes finds his scientific colleagues astonished when he defends religion. But he believes the astonishment comes from a misunderstanding of the roles of science and religion. “Like mathematics, many theological statements…

Were Neanderthals our enemies or lovers?: One difficulty in working out how these ancient humans rubbed along is that there is a lack of clear evidence of close encounters. That changed two years ago when a paper was published by Prof Paul Mellars, of Cambridge University, and his student Brad Gravina, suggesting the two kinds…

Steven Pinker explores The Genealogy Craze in America in TNR. He covers most of the angles, and expands a bit out from a laser-like focus on scientific genealogy toward the relevance of relatedness in the evolution of social behavior.

Foreskin doesn’t add “value”?

Circumcision doesn’t reduce sensation: study: The study, published in The Journal of Sexual Medicine, looked at a group of 40 men, half of them circumcised. Using sensory testing, the men were monitored at two points on the penis and the forearm while viewing erotic films. Thermal imaging was used to measure sexual arousal. I think…

Genetic conflict in fish

Ancient and continuing Darwinian selection on insulin-like growth factor II in placental fishes: …We found that IGF2 is subject to positive Darwinian selection coincident with the evolution of placentation in fishes, with particularly strong selection among lineages that have evolved placentation recently. Positive selection is also detected along ancient lineages of placental livebearing fishes, suggesting…

Katz

Paleontology & microevolution?

Rapid evolution in early trilobites fueled by high variation: Webster compiled morphological data for nearly 1,000 of the 17,000 different species of trilobites, a class of marine arthropods that died out by 250 million years ago, from 49 previously published sources. By tracking different morphological features — the number of body segments, for example —…