Epigenetic controls in ciliates is about the unique characteristic of Ciliates : they possess two kinds of nucleus (this phenomenon is called nuclear dimorphism) a micronucleus used for inheritance, and a macronucleus, which controls the metabolism. On the division or reproduction of ciliates, the two nucleus are under several epigenetic controls.
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Epigenetic controls in ciliates Wikipedia(Text) CC BY-SA