《英文msh词典》Exchange,Sister Chromatid
[入口词] Exchange,Sister Chromatid
[主题词] Sister Chromatid Exchange
[英文释义] 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.