Darwin's finches

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Darwin's finches

a group of finches that occurs on the Galapagos Islands in the Pacific. The islands are oceanic and were colonized by an ancestral type which has speciated and provides an excellent example of ADAPTIVE RADIATION.
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The difference between them was negligible in the Galapagos finch (0.
In an earlier study, I showed that the size of the morphological gap between Galapagos finch species was a poorer indicator of their phylogenetic affinity than was the net intensity of selection needed to cross the gap, which takes into account genetic covariances between traits (Schluter 1984); it follows that rates of divergence between species were limited by genetic covariance.