How easy it is to be timely when discussing big ideas in Evolution

Every time we try to grapple with a big Darwinian idea, a brand new study comes out that improves our understanding. Evolutionary biology is a dynamic field.

Last week we were talking about Darwin’s phylogenetic branching model of evolution, and the objections to it regarding the failure to include reticulation events. Then, this week, a new genome scale study of the Darwin’s Finches shows that introgression of genes among lineages AFTER speciation has occurred was common during the evolution of this iconic clade.

Full story in Sci American here, and the original report in Nature here.



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