Epigenetic is back!

Cell Cycle 2 (1):34-35 (2003)
Back in 1942, C.H. Waddington proposed a new mechanism of evolutionary change, which he termed “genetic assimilation”.1,2 The idea was that certain environmental or genetic factors can disrupt the normally canalized (i.e., stable) course of development of living organisms. This disruption may then generate phenotypic variation that could allow a population to persist in a novel or stressful environment until new mutations would eventually let natural selection fix (“assimilate”) the advantageous phenotypic variants.
Keywords epigenetics  evolutionary theory  inheritance
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