Title: chromatid
Long Title: IUPAC Gold Book - chromatid
DOI: 10.1351/goldbook.10523
Status: current

Definition
One of a pair of chromosomes arising by duplication during mitosis or by pairing during meiosis, and joined together at the centromere.

Note
Sister chromatid refers to either one of the joined pair arising from the same chromosome by duplication, and non-sister chromatid refers to either of the joined homologous chromosomes of maternal or paternal origin arising during meiosis.

Related Term
- centromere: https://goldbook.iupac.org/terms/view/10502

Source
- PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 736 (https://doi.org/10.1515/pac-2015-1202)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/10523/html
- json: https://goldbook.iupac.org/terms/view/10523/json
- xml: https://goldbook.iupac.org/terms/view/10523/xml

Citation: Citation: 'chromatid' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.10523
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Accessed: 2026-05-10T10:30:26+00:00