Monday, March 7, 2011
Friends and genotype networks
Maybe I posted this already?
"Framingham Heart Study verifies that DRD2 exhibits significant homophily and that CYP2A6 exhibits significant heterophily."
"Framingham Heart Study verifies that DRD2 exhibits significant homophily and that CYP2A6 exhibits significant heterophily."
Pronghorn Genomics and Sexual Selection
Science news tidbit on potentially cool project!:
Byers et al "have over the years collected tissue samples from 835 pronghorns across the generations, and they now plan to genetically profile each animal to determine whether female pronghorns do indeed pick genetic studs."
Byers et al "have over the years collected tissue samples from 835 pronghorns across the generations, and they now plan to genetically profile each animal to determine whether female pronghorns do indeed pick genetic studs."
Microbiome insertion sequencing
Insertion sequencing... involves using mobile DNA elements called transposons to introduce mutations into tens of thousands of bacteria. Before adding the transposons to the bacteria, the researchers tag each transposon with an identifiable DNA “bar code” that allows each mutant bacterium to be tracked—and for the gene disrupted by the transposon to be characterized. With the new sequencing technology, researchers can follow mixed populations of these mutant strains on various growth mediums or in different environments.
Anthropologists Trace Human Origins Back To One Large Goat
'Wait, That Can't Be Right,' Scientists Say
Predicting human cone distribution using pics of Botswana
"only 6% of our cone cells detect blue, and they are mostly located around the edge of our retina. Of the remaining cones, the ratio of red to green cones varies wildly between individuals.
To find out why this is, Tkačik, along with neurobiologist Vijay Balasubramanian of Penn and colleagues, created a database of more than 5000 high-resolution photographs taken at various locations in Botswana, a place near where humans likely evolved and other primates still live. The same scenes were shot at different times of day, with different exposure lengths, apertures, and distances from the camera. Using an algorithm they developed from previous studies of how human cones detect light, the researchers calculated how many photons of different wavelengths the camera had captured and what cone arrangement would pick up the largest number of them."
... and it matched the arrangement of human eyes.
To find out why this is, Tkačik, along with neurobiologist Vijay Balasubramanian of Penn and colleagues, created a database of more than 5000 high-resolution photographs taken at various locations in Botswana, a place near where humans likely evolved and other primates still live. The same scenes were shot at different times of day, with different exposure lengths, apertures, and distances from the camera. Using an algorithm they developed from previous studies of how human cones detect light, the researchers calculated how many photons of different wavelengths the camera had captured and what cone arrangement would pick up the largest number of them."
... and it matched the arrangement of human eyes.
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