Genomes reveal Darwin finches' messy family tree

February 11, 2015 8:20 PM

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Genomes reveal Darwin finches' messy family tree

The most extensive genetic study ever conducted of Darwin's finches, from the Galapagos Islands, has revealed a messy family tree with a surprising level of interbreeding between species.

It also suggests that changes in one particular gene triggered the wide variation seen in their beak shapes.

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