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2 posts tagged with Genetics by jjray.
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The Missing Transposable Link

In the 1940s Barbara McClintock discovered the remarkable phenomenon of mobile genetic elements, or transposons: parasitic DNA that makes up a significant fraction of the human genome. (Here is a video segment about McClintock: Part 1 & 2.) The discovery remains highly important: we now know that transposons play a role in driving genome evolution. Where do they come from? A compelling hypothesis is that some evolved from viruses.

Now a marine biology group at UBC has found a virus whose closest genetic relative is a type of transposon. (The paywalled paper's abstract is here.) But that is not even the interesting part. [more inside]
posted by jjray on Mar 6, 2011 - 35 comments

The reanimated zombie gene

Noncoding "junk" DNA is a signature part of the genomes of eukaryotes. Scientists have now identified a case of such DNA causing a genetic disease (Facioscapulohumeral Muscular Dystrophy) in certain genetic backgrounds by stabilizing the messenger RNA of a gene.
posted by jjray on Aug 19, 2010 - 20 comments

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