Definitions for "Fluorescence in situ hybridization"
(FISH) A physical mapping approach that uses fluorescein tags to detect hybridization of probes with metaphase chromosomes and with the less-condensed somatic interphase chromatin.
The use of fluorescent probes that emit light of different colors to tag DNA probes that hybridize specific chromosomal regions.
A technology that uses DNA probes to determine the presence or absence of specific areas of a chromosome that are so small they cannot be seen microscopically.