In which type of breeding is there a higher possibility of the accumulation of harmful recessive genes?

Homozygous purelines in cattle can be obtained by

$Hisardale$ is a new breed of ...$A$... developed in Punjab by crossing ...$B$... and ...$C$... Here $A$ and $C$ refer to:

$A$ mule is produced from a cross between $A$ and $B$.

Inbreeding is useful for which of the following?

The process in which semen is collected from the male that is chosen as a parent and injected into the reproductive tract of the selected female by the breeder is known as