Sep 09, 2022 · What is sister chromatids in biology? October 20, 2022 September 9, 2022 by Alexander Medical Definition of sister chromatid : either of the two identical chromatids that are formed by replication of a chromosome during the S phase of the cell cycle, are joined by a centromere, and segregate into separate daughter cells during anaphase. Abstract In eukaryotes, the process of sister chromatid cohesion holds the two sister chromatids (the replicated chromosomes) together from DNA replication to the onset of. . Jul 27, 2019 · Sister Chromatids Definition. . . The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere. .