Epigenetic information enables plants to adapt quickly to environmental changes

See:

http://www.physorg.com/news/2011-07-evolution-orchid-epigenetics.html

Article reads: The more recent polyploid organisms don’t inherit just one chromosome set from their mother and one from their father, but two or even more chromosome sets from each parent. As epigenetic signals are able to switch different copies of genes on and off, they have a wider “playground” in polyploid plants.

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