recombination fraction

re·com·bi·na·tion frac·tion

the proportion of progeny of a mating pair of specific genotype and coupling phase that are recombinant; there must be no differential selection among the possible types of progeny, and the recombination fraction should be the same regardless of the alleles involved or their coupling phase.
References in periodicals archive ?
The detection of linkage among AFLP markers were based on pair-wise recombination estimates with a threshold recombination fraction 3.
The LOD score (Z) was calculated at recombination fraction of = 0.
We then have r = 1/211 - exp(-2L/n - 1)] or equivalently L = -1/2(n - 1)ln(1 - 2r), where L is the map length in Morgans on which the loci are evenly distributed, n is the number of loci, and r is the recombination fraction between adjacent loci.
The two loci involved in these descent measures are allowed to recombine in all individuals at a recombination fraction, r.
This situation has not been taken into consideration in most statistical packages for linkage analysis, and no methods are available for estimating recombination fraction (r) between a gametophytic Rf gene and its linked genetic markers when a fertile [F.
1] with a recombination fraction of 14% (Weaver and Weaver, 1979).
Equations were first derived for calculating the expected proportion of progeny (m) displaying a particular combination of marker genotypes (for codominant markers) or phenotypes (for dominant markers) at two linked markers as a function of the recombination fraction (p) between markers in an [F.
5] for Individual 2, where r is the recombination fraction in the corresponding interval and [r.
k], where r is the recombination fraction in an interval between two markers, and k is a constant that depends on the mapping function to be used.
0 was used as a linkage threshold to construct the linkage map, with maximum recombination fraction as 0.
However, estimation of maximum likelihood estimators of the recombination fraction (Wu et al.