RT @TenFleming: Floral nectar. “Bitter substances, such as caffeine or nicotine, repel visitors at high concentrations, but at low concentr…
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An analysis of chromosome counts across multiple genera: “polyploidy accounts for 15% of angiosperm speciation events. Furthermore, many polyploids form in association with interspecific hybridization (allopolyploidy)." https://t.co/MEdG7MJLJ3
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A. thaliana has undergone three rounds of polyploidization since the divergence of angiosperms, “and the existence of natural cultivars with double the expected number of chromosomes reveal that the process is ongoing." https://t.co/MEdG7MJLJ3
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“The apparently diploid species A. thaliana, a model species because of its small genome, has undergone three rounds of polyploidization since the divergence of angiosperms.” https://t.co/MEdG7MJLJ3