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A chromosome is composed of a long DNA molecule that is tightly coiled around histone proteins. It consists of several distinct parts: the centromere, telomeres, and chromatid. The centromere is the constricted region that divides the chromosome into two arms, known as the short arm (p arm) and the long arm (q arm). It plays a key role during cell division, where it facilitates the __________ _____ ____ ____ _________ _____ ____ _____.
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