Polyploid Arabidopsis species originated around recent glaciation maxima.

Abstract excerpt

Polyploidy may provide adaptive advantages and is considered to be important for evolution and speciation. Polyploidy events are found throughout the evolutionary history of plants, however they do not seem to be uniformly distributed along the time axis. For example, many of the detected ancient whole-genome duplications (WGDs) seem to cluster around the K/Pg boundary (∼66Mya), which corresponds to a drastic...

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