Question

what are the two desirable effects of cross breeding or hybridization ​

Answer 1

Answer:

The two-way crossbreeding only gives heterosis in the offspring. To retain heterosis in the maternal traits, three way or four-way crossing has to be applied. Systems for crossbreeding automatically ensures as low an inbreeding as possible in the production animals.

Answer 2

One major advantage of crossbreeding is that it reduces levels of inbreeding, which often causes undesirable recessive disorders and a loss of genetic variation, as well as inbreeding depression (reduced biological fitness).