Small differences in DNA sequence contribute to heritable variations within a species, as do chemical modifications of DNA called epigenetic changes. In order to better understand the significance of such epigenetic changes for the evolution of plants, an international research team led by Professor Oliver Bossdorf from the Institute of Evolution and Ecology at the University of Tübingen investigated a large number of populations of Thlaspi arvense or field pennycress in a Europe-wide study.
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Source: Phys.org