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

crossbreeding

/cross·breed·ing/ (-brēd-ing) hybridization; the mating of organisms of different strains or species.

crossbreeding

Etymology: L, crux + bredan
the production of offspring by the mating of individuals of different varieties, strains, or species; hybridization. See also inbreeding. crossbred, adj.

crossbreeding

hybridization; the mating of organisms of different strains or species, e.g. when animals of different breeds are mated. Practiced extensively in farm animals to capitalize on advantages conferred by hybrid vigor.
References in periodicals archive ?
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 KNP with Duroc increased slaughter and carcass weights as well as dressing percentage without any effect on the backfat thickness and carcass grade.
Even so, researchers have developed another clever technique to prevent transgenes from getting into weeds through crossbreeding.
His favorite symbol for crossbreeding is the banyan tree, whose roots surface in one place only to descend into the ground somewhere else.
You can maximize the hybrid vigor that comes from crossbreeding by incorporating a third breed," explains Brown.
They compare such procedures to traditional crossbreeding.
The Hokkaido association's one attempt at live crossbreeding, in which it borrowed a guide dog from the Kansai association, was successful but the cost -- about 50,000 yen to transport the dog -- made the process too expensive to be feasible, the officials said.
The Innovis Aberdale crossbreeding programme features a secure contract for all producers.
Crossbreeding of low producing zebu (Bos indicus) cattle with high profile exotic breeds (Bos taurus) is widely adopted to improve the milk productivity in developing countries.
Farmers, food processors and environmental groups alike say accidental crossbreeding in Brazil is virtually inevitable.