Epigenetic controls in ciliates. Ciliates are protozoans with a unique characteristic: 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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“Comparatively, we can excuse any offense against the heart, but not against the imagination. The imagination knows—nothing escapes its glance from out its eyry—and it controls the breast.”
—Henry David Thoreau (1817–1862)