Close inbreeding usually results in reduction of fertility and productivity. This is called
a)	Homozygosity	b)	Outbreeding
c)	Inbreeding depression	d)	Outbreeding depression

(c)

Continued inbreeding usually reduces fertility of animals and even their productivity. This condition is called inbreeding depression. Such kind of inbreeding depression in selected animals of the breeding population can be over come by mating them with unrelated superior animals of the same breed. Such type of mating usually helps to restore fertility and yield