Phenomena and Processes

Chromosomal Position Effects

The effects on gene expression that depend on the location of a gene with respect to its neighboring genes and region of chromosome. Stable position effects are sequence dependent. Variegated position effects depend on whether the gene is located in or adjacent to HETEROCHROMATIN or EUCHROMATIN.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The effects on gene expression that depend on the location of a gene with respect to its neighboring genes and region of chromosome. Stable position effects are sequence dependent. Variegated position effects depend on whether the gene is located in or adjacent to HETEROCHROMATIN or EUCHROMATIN.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

4 entry terms
  • Chromosomal Position Effect
  • Position Effect, Chromosomal
  • Position Effects, Chromosomal
  • Position Effect Variegation

MeSH Record

Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

MeSH Record

History Note

2009

MeSH Hierarchy

Tree Number

  1. G05.308w.203.124

AMA Style

References

  1. National Library of Medicine. Chromosomal Position Effects. Medical Subject Headings (MeSH). 2026. Unique ID D055012. http://id.nlm.nih.gov/mesh/2026/D055012
  2. Chromosomal Position Effects. In: Wikidata. https://www.wikidata.org/wiki/Q70682060