Repeated backcrossing to either wild quail or domestic quail is successful.
Banteng-cattle hybrids vary in appearance, depending on whether European or zebu cattle are used in the cross as well as on the amount of backcrossing.
Hybrids resulting from backcrossing mithan with common cattle are also used as work animals.
By virtue of the ability of the female element to transmit its rusticity and vegetative form it seems, _à priori_, that we shall get a good rootstock by crossing _nigra_ as mother by Franquette (sic) and then if need be, by backcrossing to Franquette in the second generation.
The findings of this study clearly demonstrate the hybrid origin of Achillea collina-4x, the ongoing backcrossing between the diploid progenitor and their tetraploid progeny lineages.
This provides a straight forward strategy for directly employing targeted gene disruption in the existing strain, thereby bypassing tedious and time-consuming backcrossing steps that generally take two to three years to complete.
Although we cannot exclude the possibility that the ZFNs may have cleaved unknown off-target sites, such undesired mutations can subsequently be easily excluded from the genome of the carrier animals by backcrossing to the parental strain or another background strain.
Mutants were further characterized after 4 rounds of backcrossing. od14 mutation was mapped between dpy-11 and vab-8 on the right arm of LGV.