crossbreeding


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crossbreeding

 [kros´brēd-ing]
hybridization; the mating of organisms of different strains or species.

hy·brid·i·za·tion

(hī'brid-i-zā'shŭn),
1. The process of breeding a hybrid.
2. Crossing over between related but nonallelic genes.
3. The specific reassociation of complementary strands of polynucleic acids, for example, the formation of a DNA-RNA hybrid.
4. The process or act of forming a macromolecular hybrid in which the subunits are obtained from different sources.
Synonym(s): crossbreeding
References in periodicals archive ?
The benefit of this crossbreeding strategy is the introduction of heat tolerant and diseases resistant gen from Sahiwal or Thai native into a less heat tolerant and less disease resistant breed such as Holstein (Reodecha et al., 2002; Chanvijit et al., 2005).
Management and Location of the farm: The beef cattle crossbreeding program was started at Livestock Production Research Institute Bahadurnagar Okara.
A total of 20 gilts, 180 days old, were evaluated from crossbreeding schemes which included YLD and YBD with animals in each scheme.
Composite: A uniform group of cattle created by selectively crossing two or more breeds for several generations and establishing a certain fixed percentage of each breed (such as the Santa Gertrudis that carries 5/8 Shorthorn genetics and 3/8 Brahmon, or the Brangus that carries 8/8 Angus genetics and 3/8 Brahman, or the Beefmaster that carries approximately 1/2 Brahman genetics and the other half a blend of Hereford and Shorthorn in roughly equal percentage), In essence a composite is a new "breed" designed to retain a certain amount of heterosis in future generations without crossbreeding, and can thus be maintained as a "pure" breed without further infusions of other breeds.
Other teams report that they have re-created a type of Heliconius butterfly by crossbreeding two related species in the lab (SN: 6/17/06, p.
Crossbreeding is very common and the use of recognised crossbreeds and a range of various other crosses is widespread.
"While crossbreeding is not for everyone, some producers are trying it as a way to take advantage of the strengths from several different breeds," says Chuck Sattler, Select Sires vice president for genetic programs.
Coordination among local guide dog associations for crossbreeding has been rare, and it was feared that crossbreeding among guide dogs in Hokkaido alone could deteriorate dog quality and even lead to inbreeding.
Even so, researchers have developed another clever technique to prevent transgenes from getting into weeds through crossbreeding. Chloroplasts (the little factories in plant cells that use sunlight to produce energy) have their own small sets of genes.
A resident of Lezignan-Corbieres since 1986, where he was finally able to unbox his 7,000-book library, and a French citizen since 1991 although Haitian-born with African and probably Belgian forebears, Depestre is certainly a racial metis, but that is only the tip of the iceberg as regards his understanding of metissage, for basically he means cultural crossbreeding. Self-descriptive passages like "Tcheque a Prague, Italien a Milan, Bresilien a Sao Paolo, Cubain a La Havane" pullulate significantly in this hotchpotch of a volume.
Moreover, in crossbreeding, cows don't mate with fish, humans with mice, nor flounder with tomatoes.