Canadian Medical Guide > Biological Sciences > Genetic Processes > Recombination, Genetic > Sister Chromatid Exchange Terms and Definitions

Sister Chromatid Exchange

Medical Definition:	An exchange of segments between the sister chromatids of a chromosome, either between the sister chromatids of a meiotic tetrad or between the sister chromatids of a duplicated somatic chromosome. Its frequency is increased by ultraviolet and ionizing radiation and other mutagenic agents and is particularly high in BLOOM SYNDROME.
Previously Indexed:	Chromatids (1968-1979),Chromosome Aberrations (1968-1979),Crossing Over (Genetics) (1968-1979),Cytogenetics (1967),Genetics (1966)

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