NALT

Preferred term

crossing over

Topic

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.

genetic equilibrium

chiasma frequency
sister chromatid exchange

Field 001 in MARC Authority Format

10265

Spanish

entrecruzamiento

URI

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

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Created 1/19/06, last modified 8/17/17