Question

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

Answer 1

Answer:

In interspecific crosses, male and female animals of two different related species are mated. 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.