Q7 of 77 Page 65

A few statements are given below followed by a set of terms in a box. Pick the correct term and write it against the appropriate statement

a. Mating of closely related individuals within the same breed


b. Mating of animals of same breed but having no common ancestors on either side for 4-6 generations


c. Mating of animals of two different species


d. Breeding of animals belonging to different breeds


(i) Cross breeding, (ii) Inter-specific hybridization, (iii) Out breeding, (iv) Out crossing, (v) Inbreeding


a. Inbreeding


Explanation: When the mating takes place between the more closely related individuals of same breed for 4-5 generations, it is termed as inbreeding.


b. Out crossing


Explanation: There is another case in which the mating takes place between the individuals of same breed but these individuals do not have any common ancestor for 4-5 generations on the either side. The offspring (progeny) of such mating is called an out cross.


c. Inter-specific breeding


Explanation: When the mating of animals of two different species takes place, it is known as inter-specific breeding. In such breeding the male and female animals of two different related species are mated. Sometimes the hybridization produces offspring with desirable characters and is economically useful. But this is very rare in nature.


d. Cross breeding


Explanation: When the mating takes place between the superior males of one breed and the superior female of other breed, it is known cross breeding. In this two different breeds are involved and in such way that the desirable characters of two breeds are fused.


***note: out-cross, cross-breeding and inter specific breeding together comes under out breeding.***


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