Complementary genomic and epigenomic adaptation to environmental heterogeneity

Yangchun Gao, Yiyong Chen, Shiguo Li, Xuena Huang, Juntao Hu, Dan G. Bock, Hugh J. MacIsaac & Aibin Zhan
While adaptation is commonly thought to result from selection on DNA sequence-based variation, recent studies have highlighted an analogous epigenetic component as well. However, the relative roles of these mechanisms in facilitating population persistence under environmental heterogeneity remain unclear. To address the underlying genetic and epigenetic mechanisms and their relationship during environmental adaptation, we screened the genomes and epigenomes of nine global populations of a predominately sessile marine invasive tunicate, Botryllus schlosseri. We detected clear...
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