backcross

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backcross

 [bak´cros″]
in experimental genetics, union between a heterozygote of the first generation and one of its parents or an organism genetically identical to one of its parents.
double backcross the mating between a double heterozygote and a homozygote.

back·cross

(bak'kros),
1. The mating between an animal that is homozygous at a locus of interest and an animal that is heterozygous, commonly from the same ancestral stock.
2. Synonym(s): testcross

backcross

/back·cross/ (bak´kros) a mating between a heterozygote and a homozygote.

backcross

(băk′krôs′, -krŏs′)
tr.v. back·crossed, back·crossing, back·crosses
To cross (a hybrid) with one of its parents or with an individual genetically identical to one of its parents.
n.
1. The act of making such a cross.
2. An individual resulting from such a cross.

backcross

Etymology: AS, baec + cruc, cross
1 a mating (cross) between a heterozygote and a homozygote.
2 an organism or strain produced by such a cross. See also testcross.

back·cross

(bak'kraws)
Mating of an individual heterozygous at one or more loci to an individual homozygous at the same loci.
Backcrossclick for a larger image
Fig. 59 Backcross . Results from different parental types.

backcross

a genetical term describing a mating between a HYBRID organism and one of the original parental types. The results of a backcross depend upon the parental type.

A backcross to the recessive parental is diagnostic (since it reveals the genotype of the hybrid) and is called a TESTCROSS.

backcross

mating the crossbred offspring of a two-way cross back to one of the parent breeds.
References in periodicals archive ?
In contrast, larvae of the backcrossed and reselected population, Cry1F-RR, survived well on the 3 pyramided Bt corn products in the second trial with a 7-day mortality of only 34.
1] heterozygote progeny were backcrossed with the presumptive parental homozygote of both sexes.
In a principal component analysis plot, a backcross hybrid's score would be expected to be closer to the parent species to which the hybrid backcrossed, whereas an [F.
At this point we moved to triple backcrossed cultivars and longer read technology.
1 (Anderson and Thompson 2002) to test whether 2551-51657 was pure 'Apapane, pure Tiwi, an F1 or F2 hybrid, or a backcrossed hybrid into either background species.
Whether HG hybrids can be backcrossed to their parental species and produce viable offspring requires further investigation.
Nevertheless, the frequency of this allele is in accordance with the expected value to the backcrossed progeny, due to the heterozygous character of the recurrent progenitor used in this work.
Thus the G1 animals were crossed with Charolais to produce CBK (25 JNC: 50 Charolais: 25 Brahman) and the CBK was backcrossed to JNC to produce a three breed synthetic named as BCBK which is 62.
congenic interval) on one copy of the respective chromosome; the DNA on the other copy of the chromosome is inherited from the background strain into which the animals have been backcrossed.