Definition: Chromatin, which is a part of DNA, plays a crucial role in gene expression by facilitating its movement and organization within cells. It can be divided into two main types - euchromatin (also known as euchromatine) and heterochromatin (also known as heterochromatine). Euchromatin is found in the nucleus, while heterochromatin is present in other parts of the cell, including the cytoplasm.
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