In epigenetics, paramutation's an interaction between two alleles of a single locus, resulting in a heritable change of one allele that's induced by the other allele. Paramutation violates Mendel’s first law, which states that in the process of the formation of the gametes (egg or sperm) the allelic pairs separate, one going to each gamete, and that each gene remains completely uninfluenced by the other. In paramutation an allele in one generation heritably affects the other allele in futu… (More on Paramutation)