The common edible frog of Europe is a hybrid between two species, Rana lessonae and Rana ridibunda. The hybrids were first described in 1758 and have a wide distribution, from France across central Europe to Russia. Both male and female hybrids exist, but when they mate among themselves, they are rarely successful in producing offspring. What can you infer from this information?

Hybrid Offspring Degeneration Phenomenon...

Explanation:

This happens in hybrids because of their improper alignment of chromosomes. It is rare but when two hybrids mate, they already have defected copies of chromosomes of their parental specie. That why the offspring from hybrids are mostly born dead and degenerate totally in embryonic stage.

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