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Schematic diagram of a cell showing the nucleus, chromosomes, chromatids and centromere.

(genetic biology)

Grammar: noun
plural: chromatids
Definition: one of two daughter strands of a replicated chromosome. Chromatids are joined by a single centromere and separate during cell division to become individual chromosomes.
Example:
Condensed chromosomes are pulled apart during mitosis, using a system of microtubules which drag the separated chromatids to opposite poles of the cell.