Reciprocal exchange of chromatin between two replicated chromosomes that remain attached to each other until anaphase of mitosis; used as a measure of mutagenicity of substances that produce this effect. RT mitosis.
(synonym: SCE) Exchange of genetic material between the two chromatids of a single chromosome during the cell division process; similar to crossing-over (recombination), except that the exchange involves the two sister chromatids of a single chromosome, whereas crossing-over refers to exchange of genetic material between the two homologous chromosomes of a chromosome pair
Sister chromatid exchanges (SCEs) involve breakage of both DNA strands, followed by an exchange of whole DNA duplexes. SCE analysis is considered to be a sensitive method for detecting DNA damage. [See: Evidence Supporting the Mutagenicity of Fluoride | Micronucleus and Sister Chromatid Exchange Frequency in Endemic Fluorosis
an exchange at one locus between sister chromatids of a chromosome, which does not result in an alteration of overall chromosome morphology.
A crossover between sister chromatids (chromatids which are the products of replication of a single chromosome and which ought therefore to be genetically identical).
Damage to the genetic material of a cell where chromosomes break then rejoin improperly, often used to indicate whether something is harmful to genes.
Sister chromatid exchange is the exchange of genetic material between two identical sister chromatids.