- Sister chromatids are the two newly synthesized daughter chromatids derived from the same chromosome parent. During chromosomal pairing in meiosis, recombination can occur between sister or non-sister chromatids.
Definition from: NCI Thesaurus via Unified Medical Language System at the National Library of Medicine
- Any of the chromatids formed by replication of one chromosome during interphase of the cell cycle especially while they are still joined by a centromere.
Definition from: Merriam-Webster's Medical Dictionary by Merriam-Webster Inc.
See also Understanding Medical Terminology.