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Genetic distance


Genetic distance
A way of measuring the amount of evolutionary divergence in two separated populations of a species by counting the number of allelic substitutions per locus that have cropped up in each population.
Related Terms: Population ...
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Genetic Distance Estimation by PHYLIP
: The most popular (and free) phylogenetics program
PHYLIP
can be used to estimate genetic distance between populations. Most components of PHYLIP can be run
online
. One component of the package ...
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Measure for genetic distance of two individuals or varieties. Values range between 0 (= no common ancestor) to 1 (= same individual or variety).
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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A measure of genetic distance that tells how far apart two genes are. Generally one centimorgan equals about 1 million base pairs.
explained:
Listen to a detailed explanation.
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Microsatellites developed for particular species can often be applied to closely related species, but the percentage of loci that successfully amplify may decrease with increasing genetic distance [6].
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Recent electrophoretic work has shown that the genetic distances among flies from different sympatric hosts species are greater than the distances among flies on the same host in different geographic areas (Waring et al. 1990).
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Discrepancies in the estimated physical and genetic distances are noted. The genetic distance between some markers is 15 times (15cM) the estimated physical distance (1MB); the total genetic distance is only ~2X the physical size of the chromosome.
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The great antiquity of the bacteria has enabled them to evolve a great deal of genetic diversity. They are far more diverse than, say, the mammals or insects. For instance, the genetic distance between E.
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Such genetic distances are additive (bp +pr = br).
Markers that have measurable recombination frequencies are said to be linked.
Markers related through a chain of linkage constitute a linkage group.
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