Definition of intercross in English:



  • (with reference to animals or plants of different breeds or varieties) interbreed or cause to interbreed.

    • ‘One corn type they have introduced us to is called a ‘synthetic’, which is a deliberate mixture of a number of similar, improved lines that can be allowed to intercross in the field.’
    • ‘At least 8 of these were shown to be in the same linkage group by intercrossing.’
    • ‘In this form it presumably could be maintained in a population against the tendency to swamping by intercrossing.’


  • 1An instance of intercrossing of animals or plants.

    • ‘From the total offspring obtained, 75 intercrosses were made.’
    • ‘We were interested in scoring the incidence of balanced progeny from Rb heterozygote intercrosses and in determining the parental origin of transmission of the Rb chromosome in these offspring.’
    • ‘We have mapped it by analysis of backcrosses and intercrosses between B6 mice and both susceptible strains.’
    • ‘Ten F 1 intercrosses were set up to restore the phenotype.’
    • ‘Important contributions to their genetic dissection have been made by analyzing the progeny of intercrosses.’
    • ‘Conventional QTL mapping that uses intercrosses of a chosen pair of lines is able to detect only a minute fraction of the existing genetic variance.’
    • ‘This is especially true for F 2 populations derived from original intercrosses of inbred lines that exhibit linkage disequilibrium upon which QTL studies depend.’
    • ‘For this purpose we determined the genotypes of 695 offspring from F 1 intercrosses.’
    • ‘The foregoing F 2 population may be subjected to a series of further random intercrosses.’
    • ‘In practice this model could be extended to include inferences from crosses with resulting heterozygous individuals, such as backcrosses or intercrosses.’
    • ‘A total of 116 female mice from an intercross between the strains were genotyped.’
    • ‘It will obviously thus act far more efficiently with those animals which unite for each birth; but, as already stated, we have reason to believe that occasional intercrosses take place with all animals and plants.’
    • ‘Due to the similarity of RIX and F 2 genome structures, it would appear that methods developed for F 2 intercrosses could be directly applicable to RIXs.’
    • ‘To refine the mapping of the mutation, a series of backcrosses and intercrosses were set.’
    • ‘We tested this hypothesis by reanalyzing the genome scan data for the mice in the original intercross.’
    • ‘We found four different KIT alleles in a small sample of eight Large White females used as founder animals in a wild boar intercross.’
    • ‘Homozygous mutants were obtained by intercrosses of the heterozygotes.’
    • ‘Samples from a three-generation intercross between the European wild boar and Large White domestic pigs were also used.’
    1. 1.1An animal or plant resulting from this.
      • ‘We have recently confirmed this assignment by linkage analysis using our intercross between the red jungle fowl and the White Leghorn chicken.’
      • ‘The development of large numbers of molecular markers and interval-mapping methods paved the way for QTL mapping using intercrosses of inbred experimental organisms.’
      • ‘The physical characteristics, vigor, and productivity of the intercrosses suggest that the negative effects of inbreeding in the Florida panthers of the 1970s are being remedied.’
      • ‘Differences in the PRKAG3 gene sequences of the founder animals of the intercross were analyzed.’