Two species of salamanders have overlapping territories,and they successfully mate and produce eggs.However,most of the eggs fail to hatch.Only 10% of them hatch,but the tadpoles are weak and are almost all killed by predators.The few tadpoles that exit the water have weak bones and soon die.This is an example of

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The fact that most of the eggs produced by the two species of salamanders fail to hatch, and the few that do produce weak tadpoles with weak bones that soon die, indicates that there is hybrid inviability. Hybrid inviability refers to the phenomenon where hybrid offspring of two species have reduced viability and fail to develop or survive. In this case, the hybrid offspring are weak and have low survival rates, indicating that the genes from the two species are not compatible, leading to offspring with reduced viability.

Two Species of Salamanders Have Overlapping Territories,and They Successfully Mate