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Characteristics of epialleles.
A&B Epialleles in natural populations could either be effectors of DNA sequence change (A) or directly drive phenotypic differences without DNA sequence differences (B).
C- Epialleles can either function in trans, where they convert other epialleles at the same locus on different chromosomes to their own state (left) or in cis where their epigenetic state is transmitted longitudinally between generations without affecting the other allele.
