Two species regularly come into contact and form hybrids that have higher fitness than either of the parental species. What are some likely consequences of regular hybridization between these species? Check all that apply.
A. complete reproductive isolation of the two original species
B. evolution of a third species
C. reinforcement of prezygotic isolating mechanisms
D. extinction of one or both of the parental species.
E. increased gene flow between the parental species
Answer: E
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