A Ghent University-led group turned to genome or transcriptome sequence data representing 41 different plants to look back at ancient whole genome duplication events in the angiosperm plant lineage. The researchers' analysis of genome sequences for 38 plants — and transcriptome sequences for three more — supported the notion that genome duplication took place at roughly the same time as the so-called Cretaceous-Paleogene extinction, which occurred some 66 million years ago.

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