Question

The breeding carried out between animals of different breeds is called ________.
A. Out-crossing
B. Cross-breeding
C. Inbreeding
D. Both (a) and (b)

Answer 1

Hint: Cross-breeding is carried out between two animals of different breeds, which allow the combination of the desirable characters between the two animals. The progeny obtained as a result of cross-breeding is the most desirable organism for commercial scale.

Complete answer: Cross-breeding is the process of mating between two different breeds. The progeny is called a crossbreed, i.e. obtained from the mating of purebred parents of two different parents or species. The offspring share the trait of both parent lineages or produce an organism with hybrid vigour. Cross-breeding is used to maintain the viability and health of organisms. Crossbreeds are progeny obtained by the crossing within a single species, while hybrids are crosses between different species. It is performed in many different species across the world, such as dogs, cattle, and horses. A designer crossbreed or designer breed is a crossbred animal that has purebred parents, usually registered with a breed registry, but from two different breeds. These animals are the result of a deliberate decision to create a specific crossbred animal. Less often, the animal may have more than two pure breeds in its ancestry, its entire pedigree is known to descend from specific known animals. A hybrid animal is one with the parentage of two separate species, differentiating it from crossbred animals, which have parentage of the same species. The examples of a hybrid animal are The mule, a cross between a female horse and a male donkey.
Hence, the correct option is B.

Note: Outcrossing is a form of crossbreeding used within a purebred breed to upsurge the genetic diversity within the breed, predominantly when there is a necessity to avoid inbreeding.