Species A and Species B, both closely related to one another, have distinct habitats that have very little interbreeding. However, some individuals from Species A and Species B occasionally produce hybrid offspring in the area that separates both of their respective habitats. These hybrid offspring have low fitness and struggle to survive in both ancestral habitats but have extremely high fitness in the area in between. What is the most possible outcome of this secondary contact between Species A and Species B? Extinction of one of the species Fusion of the populations Formation of a hybrid zone Reinforcement of divergence
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When hybrids produced in a hybrid zone can breed with each other and with both parent species, and they survive and reproduce as well as members of the parent species, one would predict that a. the hybrid zone would be stable. b. sympatric speciation would occur. c. reinforcement of reproductive barriers would keep the parent species separate. d. reproductive barriers would lessen and the two parent species would fuse.
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