Interspecific crosses are rare in nature and | vedclass

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(B) Interspecific crosses involve mating between two different species. These are rare because species are reproductively isolated,meaning they cannot

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Due to reproductive isolation and genetic incompatibility.

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(B) Interspecific crosses involve mating between two different species. These are rare because species are reproductively isolated,meaning they cannot produce fertile offspring. The resulting hybrids are often sterile,such as a mule.Intergeneric crosses involve mating between two different genera. These are almost unknown because the genetic distance between different genera is so large that the resulting zygotes are usually non-viable or fail to develop,making such crosses biologically impossible in nature.

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

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