Chromatids

**Definition:** 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)

**Tree numbers:** - A11.284.430.106.279.345.190.160.175 - G05.360.160.175