Crossing Over, Genetic [crossing over (genetika)]

topical
10
Terms

crossing-over (genetika)

 

Crossing Over
Crossing-Over, Genetic

Persistent link   https://www.medvik.cz/link/D003434
Definition

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.

Annotation
do not confuse with CROSSES, GENETIC, the result of breeding 2 varieties of the same species
DUI
D003434 MeSH Browser
CUI
M0005351
Previous indexing
Genetics (1966-1967); Cytogenetics (1967)
History note
2005(1968)
Public note
2005; see CROSSING OVER (GENETICS) 1968-2004

Allowable subheadings

DE
drug effects 1
ES
ethics
GE
genetics 2
IM
immunology
PH
physiology
RE
radiation effects 2

G Phenomena and Processes
G01 Physical Phenomena 79
G02 Chemical Phenomena 308
G03 Metabolism 1 199
G03 Metabolic Phenomena obsolete
G04 Cell Physiological Phenomena 515
G05 Genetic Phenomena 135
G05.728 Recombination, Genetic 262
G05.728.615 Homologous Recombination 53
G05.728.615.200 Crossing Over, Genetic 10
G05.728.615.475 Gene Conversion 16
G05.728.615.612 Recombinational DNA Repair 15
G05.728.615.750 Sister Chromatid Exchange 66
G06 Microbiological Phenomena 96
G07 Physiological Phenomena 176
G08 Reproductive and Urinary Physiological Phenomena 18
G09 Circulatory and Respiratory Physiological Phenomena 94
G10 Digestive System and Oral Physiological Phenomena 4
G11 Musculoskeletal and Neural Physiological Phenomena 17
G12 Immune System Phenomena 249
G13 Integumentary System Physiological Phenomena 14
G14 Ocular Physiological Phenomena 148
G15 Plant Physiological Phenomena 158
G16 Biological Phenomena 130
G17 Mathematical Concepts 66

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