Diseases

Aneuploidy

The chromosomal constitution of cells which deviate from the normal by the addition or subtraction of CHROMOSOMES, chromosome pairs, or chromosome fragments. In a normally diploid cell (DIPLOIDY) the loss of a chromosome pair is termed nullisomy (symbol: 2N-2), the loss of a single chromosome is MONOSOMY (symbol: 2N-1), the addition of a chromosome pair is tetrasomy (symbol: 2N+2), the addition of a single chromosome is TRISOMY (symbol: 2N+1).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The chromosomal constitution of cells which deviate from the normal by the addition or subtraction of CHROMOSOMES, chromosome pairs, or chromosome fragments. In a normally diploid cell (DIPLOIDY) the loss of a chromosome pair is termed nullisomy (symbol: 2N-2), the loss of a single chromosome is MONOSOMY (symbol: 2N-1), the addition of a chromosome pair is tetrasomy (symbol: 2N+2), the addition of a single chromosome is TRISOMY (symbol: 2N+1).

MeSH Record

Classification

Broader headings

Narrower headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

See Also

MeSH Record

Synonyms

7 entry terms
  • Aneuploid
  • Aneuploidies
  • Aneuploids
  • Aneuploid Cell
  • Aneuploid Cells
  • Cell, Aneuploid
  • Cells, Aneuploid

MeSH Record

History Note

68

MeSH Record

Previous Indexing

  • Chromosome Abnormalities (1966-1967)

MeSH Hierarchy

Tree Numbers

  1. C23.550.210w.050w
  2. G05.365w.590w.175w.050w
  3. G05.700w.131w

AMA Style

References

  1. National Library of Medicine. Aneuploidy. Medical Subject Headings (MeSH). 2026. Unique ID D000782. http://id.nlm.nih.gov/mesh/2026/D000782
  2. Aneuploidy. In: Wikipedia. https://en.wikipedia.org/wiki/Aneuploidy
  3. Aneuploidy. In: Wikidata. https://www.wikidata.org/wiki/Q529622