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NALT Concept Space
U.S. Department of Agriculture

NALT Full

Concept information

  1. Fields of Study
  2. cell biology
  3. cytogenetics
  4. crossing over
  1. Fields of Study
  2. genetics
  3. cytogenetics
  4. crossing over
  1. Fields of Study
  2. genetics
  3. molecular genetics
  4. genetic recombination
  5. crossing over

Preferred term

crossing over

Type

  • Topic

Definition

  • Information The reciprocal exchange of segments at corresponding positions along pairs of homologous chromosomes by symmetrical breakage and crosswise rejoining forming cross-over sites 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.

    Source: Medical Subject Headings 2012

    Type: Concept definition

Broader concept

Related concepts

Synonyms

  • chiasma frequency
  • sister chromatid exchange

In other languages

URI

https://lod.nal.usda.gov/nalt/24805

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RDF/XML TURTLE JSON-LD Created 1/19/06, last modified 8/17/17