Mating among close relations is referred to as:

Which of the following is practised to overcome average productivity in animals with respect to milk production,growth rate in beef cattle,etc.?

The $IVRI$ (Indian Veterinary Research Institute) is associated with which of the following?

Controlled breeding experiments can be carried out using .......

An out-cross is produced when animals

$A$ superior female,in the case of cattle,is the $A$ that produces more milk per lactation. On the other hand,a superior $B$ is that $C$ which gives rise to $D$ as compared to those of other males. Here $A$ and $D$ refer to: