question_answer 57)

  Interspecific crosses are rare in nature and intergeneric crosses almost unknown. Why?

Answer:

                  In interspecific crosses, male and female animals of two different related species are mated. In some cases, the progeny may combine desirable features of both the parents and may be of considerable economic value, e.g., the mule. An interspecific hybrid's fertility varies. Many of Panthera (ligers, tigonsieopons etc.) hybrid males are infertile, while the female counterparts can breed with the species she contains(female ligers can breed with a lion or a tiger to produce li-ligers or ti-tigers)these are rare in nature. Intergeneric hybridization is the crossing of two different animals/plants of different genus. It is almost unknown in nature .Intergeneric hybrids more or less never form complete zygotes/embryos. These are sterile/infertile.