What is inbreeding depression and how is it caused in organism ? Write any two advantages in inbreeding.

Explanation

Inbreeding refers to mating between closely related individuals within the same breed for 4-6 generations. It usually results in reduction of fertility and productivity, when continued for longer time. This is called inbreeding depression, Advantages of inbreeding are:
(i) It increases homozygosity and evolves a pureline.
(ii) Recessive genes are exposed by inbreeding, which can then be eliminated by selection.
(iii) It helps in accumulation of superior genes.