epigenetics

epigenetics
epi·ge·net·ics -iks n pl but sing in constr the study of how genes produce their effect on the phenotype of the organism

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epi·ge·net·ics (ep″ĭ-jə-netґiks) the study of heritable changes in the function of genes that occur without changes in the DNA sequence, occurring during development and cell proliferation and including mechanisms such as DNA methylation, histone modification, and RNA interference.

Medical dictionary. 2011.

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