chromosome substitution The replacement of one or more chromosomes by others (totally or partially homologous) from another source (either a different strain of the same species or a related species that will permit hybridization; see HYBRID) by a suitable crossing programme.

chromosome substitution The replacement of one or more chromosomes by others (totally or partially homologous) from another source (either a different strain of the same species or a related species that will permit hybridization) by a suitable crossing programme.