Inbreeding is necessary to produce pure line generation, Give other merits and demerits of inbreeding.

Explanation

Merits
i. Inbreeding exposes harmful recessive genes, that are eliminated by selection
ii. It helps in the accumulation of superior genes and elimination of less desirablc genes.
Demerits
Close inbreeding usually reduces fertility and cven productivity. This is called inbreeding depression.