Question

Write differences between the inbreeding & outbreeding.

Answer 1

Hint: The purpose of breeding processes such as inbreeding and outbreeding is to increase the yield of the animals and to improve the desirable qualities of the produce or offspring. These processes are used commercially.

Complete answer:
The differences between the inbreeding & outbreeding are as follows:

Inbreeding	Outbreeding
Inbreeding is the production of offspring from the breeding of the organisms that are closely related genetically.	Outbreeding is the production of offspring from the breeding of genetically unrelated organisms.
Closely related animals are used.	Unrelated organisms are used.
Parents are the same breed for 4-6 generations.	Parents used should not be the common ancestor for 4-6 generations.
Mating occurs between individuals of the same species.	Mating occurs between separate species, genera, breeds, or varieties.
Typically reduces the vigour of the offsprings.	Increases the vigour of the offsprings.
Used for the development of pure lines by increasing heterozygosity.	Used for the development of hybrid species with desirable qualities.
Harmful recessive alleles may be exposed, loss of fertility, and productivity.	Success rate of mating is less; fertility may be lost.
Example: selective breeding, self breeding and back cross.	Example: breeding of individuals in two populations of the same genus.

Note: Breeding strategy for inbreeding: Superior males and superior females of the same breed are mated in pairs followed by the evaluation of the progeny and the superior of then are then selected further for the next round of inbreeding. Continuous inbreeding results in inbreeding depression where fertility and productivity are reduced. Fertility and yield can be restored by mating with unrelated superior males.