The field of epigenetics is one of the most exciting and rapidly expanding scientific research areas in the study of the genome and how it responds adaptively in organisms. The term epigenetics is derived from genetics plus the Greek prefix epi, which means “on top of” or “in addition to.” In other words, it’s an additional type of genomic language that overlays the DNA code that controls how genes are switched on or off. It even determines the three-dimensional structure of the chromosomes in the cell’s nucleus.
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