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Silkworms and Spider Genes

If you don't already follow Ed Yong's great Not Exactly Rocket Science, you've been missing some of the best science blogging around. Check out his latest post, on research involving the insertion of spider silk genes into the genome of silkworms. These silkworms produced silk that's an improvement (in human terms; silkworm silk works just fine for silkworms) over normal silkworm silk, but not really up to spider dragline silk standards. There are all sorts of possible reasons for this result; I give some of them in the comments section below the post.
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