question_answer 15)

  Inbreeding is carried out in animal husbandry because it (a) increases vigour                                         (b) improves the breec; (c) increases heterozygosity                       (d) increases homozygosity

Answer:

                  (d) Inbreeding increases homozygosity, i.e., state of possessing two identical alleges, one inherited from each parent. !t is necessary if we want to evolve a pureline in any animal .Inbreeding exposes harmful recessive genes mat are eliminated by selection. It also helps in accumulation of superior genes and elimination of less desirable genes.