Skip to main content

Medical Subject Headings

Search from vocabulary

Content language

Concept information

Genetic Phenomena > Recombination, Genetic > Homologous Recombination > Crossing Over, Genetic

Preferred term

Crossing Over, Genetic  

Type

  • Topical Descriptor

Broader concept

Related concepts

Entry terms

  • Crossing Over
  • Crossing-Over, Genetic
  • Crossing Overs
  • Genetic Crossing-Over

Note

  • do not confuse with CROSSES, GENETIC, the result of breeding 2 varieties of the same species

Scope note

  • The reciprocal exchange of segments at corresponding positions along pairs of homologous CHROMOSOMES by symmetrical breakage and crosswise rejoining forming cross-over sites (HOLLIDAY JUNCTIONS) that are resolved during CHROMOSOME SEGREGATION. Crossing-over typically occurs during MEIOSIS but it may also occur in the absence of meiosis, for example, with bacterial chromosomes, organelle chromosomes, or somatic cell nuclear chromosomes.

History note

  • 2005(1968)

In other languages

URI

http://www.yso.fi/onto/mesh/D003434

Download this concept:

RDF/XML TURTLE JSON-LD Created 1/1/99, last modified 6/17/16