Related topics: species · genes · evolutionary biology

Ratchet-like genetic mutations make evolution irreversible

(PhysOrg.com) -- A University of Oregon research team has found that evolution can never go backwards, because the paths to the genes once present in our ancestors are forever blocked. The findings -- the result of the first ...

Origin of birds confirmed by exceptional new dinosaur fossils

(PhysOrg.com) -- Chinese scientists today reveal the discovery of five remarkable new feathered dinosaur fossils which are significantly older than any previously reported. The new finds are indisputably older than Archaeopteryx, ...

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