centimorgan


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Mor·gan

(mōr'găn),
Harry de R., British physician, 1863-1931. See: Morgan bacillus.

mor·gan (M),

(mōr'găn),
The standard unit of genetic distance on the genetic map: the distance between two loci such that on average one crossing over will occur per meiosis; for working purposes, the centimorgan (0.01 M) is used.
[T.H. Morgan, U.S. geneticist, 1866-1945]

map unit

An arbitrary unit for the distance between genes, usually derived from the percentage of recombination, but also defined by the time at which the gene is transferred during conjugation. One map unit corresponds to a recombination frequency of 1%.

mor·gan

(mōr'găn)
The standard unit of genetic distance on the genetic map: the distance between two loci such that on average one crossing over will occur per meiosis; for working purposes, the centimorgan (0.01 M) is used.
[T.H. Morgan, U.S. geneticist, 1866-1945]

centimorgan

A unit of distance between two genes on a chromosome, representing a 1 per cent probability of recombination in a single meiotic event. Named after Thomas Hunt Morgan (1866–1945) the American Nobel-prizewinning geneticist often described as the father of modern genetics.

centimorgan

a measure of the degree of recombination between two genes. One centimorgan is approximately 1000 kilobases. Named after T.H. Morgan. See also genetic map.
References in periodicals archive ?
Again, records are scarce, and without a historical trail to follow, Eve asked Trotsky's great-granddaughter to test her DNA so we can compare centimorgans.
0001) association was also detected between SCN resistance and the genetic region that spans four AFLP and two SSR markers from centimorgan position 30.
i] is the map distance in centimorgans between the markers flanking interval i.
Map units in centimorgans (cM) were derived from the Kosambi function (Kosambi, 1944), and the map was drawn by MapChart 2.
Two-hundred-and-nine microsatellite loci from that map were genotyped in this population, providing a mean density of 11 centimorgans per marker locus per parent for QTL discovery analyses.
The Kosambi mapping function was used to compute the map distances in centimorgans (cM) from the recombination fractions.
A linkage map was constructed using JoinMap (Stam, 1993) by placing 33 out of 350 polymorphic RAPD markers on 10 partial LGs for a total length of 183 centimorgans (cM).