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Home > Terms > English, UK (UE) > Crossing-over unit
Crossing-over unit
A measure of distance between two loci on genetic maps that is based on the average number of crossing-over events that take place in the interval between those two loci during meiosis. A map interval that is one crossing-over unit in length (a centiMorgan) describes an interval between two loci such that one in every hundred gametes recovered from meiosis is recombinant in that interval, i.e., the allele at the first locus is maternal in origin, while the allele at the other locus in that same gamete is paternal in origin.
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- Part of Speech: noun
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- Industry/Domain: Biotechnology
- Category: Genetic engineering
- Organization: FAO
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