Sister Chromatids

Definition

Sister chromatids are identical copies of a single chromosome that are connected by a centromere. They are created during the S phase of interphase and later separated during anaphase.

Related terms

Chromosome: This is a long DNA molecule with part or all of the genetic material of an organism.

Interphase: The stage in the cell cycle where the cell grows, replicates its DNA, and prepares for division.

Centrosome: An organelle near the nucleus of a cell that contains the centrioles (in animal cells) and from which spindle fibers develop in cell division.