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one of two identical strands into which a chromosome splits during mitosis

one of two identical strands into which a chromosome splits during mitosis

Either of the two longitudinally adjacent threads formed when a eukaryotic chromosome replicates prior to mitosis. The chromatids are held together at the centromere. Sister chromatids are derived from the same chromosome. (Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)

[Greek] A component of a tetrad in meiosis; a halfchromosome between early prophase and metaphase in mitosis, or between diplotene and second metaphase in meiosis.