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 ?
During backcross stage, the genetic advance of foreground traits showed downward trend with the increase of backcross generations.
Six foreground markers namely RM168, RM148, RM413, RM206, RM5961 and RM101 was found to be related to Pi-gene and used to evaluate F1 and each backcross generation.
During backcross phase, 10 males were selected from introgression population by foreground selection and background selection, all of which were mated to 100 females random selected from recipient population to produce next generation.
By principles of quantitative genetics, genetic variances expected in backcross generations can be predicted by genotype frequencies.
F1 hybrids and F2 backcross hybrids were raised and used as parental broodstock in 2 cycles of backcrossing.
Schaible has continued his Dalmatian Low Uric Acid Project or Backcross Project, breeding to the best lines of Dalmatians.
At the same time that the ISCL is generated, and in subsequent backcross generations, additional recombinants are sought in order to further narrow the interval of interest.
Identification of QTLs for early blight (Alternaria solani) resistance in tomato using backcross populations of a Lycopersicon esculentum x L.
In this study, parental, F1, F2, and backcross populations were used: 1) to quantify maternal inheritance, degree of dominance, and transgressive segregation; and 2) to determine whether CI 13227 and L-574-1 share any resistance genes.
gene heredity mutation mitosis embryo allele helix clone sequence polymer autosome phenotype recessive metaphase locus polymerase telophase oligonucleotide geneticist interphase prophase phage bacteriophage chromomere transduction transformation nucleus Mendelian genome meiosis chromosome recombinant pedigree plasmid vector replicon nucleosome chromatography zygote centromere anaphase genotype endonuclease backcross exonuclease polyploidy diakinesis cytogenetics crossover segregate codominance dominance translocation nucleolus
Nonetheless, because the hybrid lineages included two backcross generations, and because of the low frequency of many introgressed markers, it is likely that most introgressed markers are heterozygous and coupled.