backcross

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backcross

[′bak‚krȯs]
(genetics)
A cross between an F1 heterozygote and an individual of P1 genotype.
References in periodicals archive ?
The length of the intact donor chromosome segment around a target gene in marker-assisted backcrossing.
A conventional backcrossing program involved the production of varieties that are similar to the susceptible parent but incorporated with required resistance gene.
Frequency of favourable allele for background QTLs under different ratios of QTL variance:MBLUP was background selection method, the result show in figure 4: during backcross phase, frequency of favourable allele for two background QTLs differ greatly among different ratios of QTL variance, backcrossing two generations, frequency of favourable allele for two background QTLs were 0.
The objective of this study was to identify if the clustering methods would be able to reveal the hierarchical structure of the generations of backcrossing by keeping the similarity expected according to probabilistic principles associated with chromosome segregation during meiosis.
1], then through continued backcrossing eventually ending with 15/16 American, 1/16 Chinese, denoted [B.
Backcrossing maintains the desired genetic complexes that are already present in adapted genotypes while allowing recombination between exotic and adapted genomes.
More reliable molecular/genetic techniques may be required to determine if backcrossing and introgression are occurring or if multiple cyprinid species are present.
Through backcrossing, the researchers have now produced progeny that also offer good productivity, vigor, and adaptation.
The theoretical proportion of the donor genome in near-isogenic lines of self-fertilizers bred by backcrossing.
Using an elaborate computer simulation of the way genes can spread between and within populations, the team concluded that backcrossing is probably very rare.
In fact, with the exception of two individuals, marker numbers were more consistent with pedigrees involving three to seven backcross generations rather than the two generations of backcrossing actually employed.
The problem is that, in a population with hybridization and backcrossing, there is actually no such thing as a "pure" species, or even "[F.