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In this study, we performed a reciprocal cross between populations of the two species described earlier and two cycles of backcrossing between the hybrid populations and the bay scallop, with the aim of broadening the genetic basis of Argopecten irradians for use in future selective breeding programs.
He understood that on his slow march toward his heavenly reward, he would spend as many years as possible growing and backcrossing the American with the Chinese chestnut .
This system is especially useful when inheritance of the resistance is polygenic, or determined by many genes, and backcrossing systems are consequently less effective.
selection of mutants, somoclonal or individual variants, backcrossing or (interestingly) transformations by genetic engineering.
Congenic animals (strains): Animal strains generated in the laboratory by mating two inbred strains, and backcrossing the descendants for 5-10 generations with one of the original strains (i.
We know that a species evolves in the wild by crossing and backcrossing over several centuries until you get a fairly stable population.
Through backcrossing, the researchers have produced progeny that also offer good productivity, vigor and adaptation.
Using an elaborate computer simulation of the way genes can spread between and within populations, the team concluded that backcrossing is probably very rare.
Using a technique known as backcrossing, McIntire and her colleagues generated mice that were genetically identical to the susceptible mice, other than for small segments of DNA from the resistant group.
tetraploids and disease-resistant lines), and preservation of broodstock at each generation for future backcrossing.
The Hi-II genotype has been internationally used to produce maize transgenic plants; however, this genotype presents low agricultural value, which increases the time needed as well as the costs for transgene transference to locally adapted lines by backcrossing (LUPOTTO et al.
Repeated backcrossing may give rise to individuals of mixed ancestry that can no longer be distinguished from parental taxa (Howard et al.