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What’s new under the sun? Offering an alternate view on how “novel” structures evolve

What’s new under the sun? Offering an alternate view on how “novel” structures evolve

WOODS HOLE, Mass. – Many crustaceans, including lobster, crabs, and barnacles, have a cape-like shell protruding from the head that can serve various roles, such as a little cave for storing eggs, or a protective shield to keep gills moist.This shell (carapace), it’s been proposed, didn’t evolve from any similar structure in the crustacean ancestor, but appeared de novo (or out of the blue) through somewhat random co-option of the genes that also specify insect wings.However, in a new study from the Marine Biological Laboratory (MBL), Research Associate and Director provide evidence for an...

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