Don’t Read Face of Molecular Clock at Face Value

first_imgA press release from PLoS Biology says the so-called “molecular clock” (the idea that genes mutate at a steady rate) is “not so dependable after all.” Mutations tend to cluster around microsatellites in the genome, biasing the arrangement of genetic changes. The claim is based on the work of Edward Vowles and William Amos, who found that “the clock is anything but constant. Instead, a mutation in one spot in the genome affects the chance of getting another mutation nearby.”The finding disputes evolution, but the article claims that mutations are the raw material for evolution. It also repeats the myth that the genome is mostly filled with “apparently meaningless nonsense.” Any evidence? Nope. Any assumptions? Yep. Junk DNA? See 06/03/2004 headline.(Visited 4 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

London Olympics: Amit Kumar reaches quarter finals of 55kg freestyle wrestling

first_imgIndian wrestler Amit Kumar moved into the quarterfinals of the men’s 55kg event while his compatriot Narsingh Pancham Yadav lost his 74kg first round bout to Canadian Matthew Judah Gentry at the London Olympics on Friday.Kumar defeated Iran’s Hassan Sabzali Rahimi 3-1 here at the ExCel North Arena 2.Kumar, who received a first round bye, will next face the winner of the bout between Bulgarian Radoslav Marinov Velikov and Vladimer Khinchegashvili of Georgia. Kumar is the youngest Indian wrestler to qualify for the Olympics.Narsingh went down 1-3 to Gentry. The Indian’s medal chances are still alive if Gentry qualifies for the final as this would allow Narsingh to wrestle in the repechage round for a bronze medal.last_img