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Two species of frogs belonging to the same genus occasionally mate, but the embryos stop developing after a day and then die. these two frog species separate by _____. two species of frogs belonging to the same genus occasionally mate, but the embryos stop developing after a day and then die. these two frog species separate by _____. reduced hybrid viability reduced hybrid fertility hybrid breakdown gametic isolation

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These two frog species separate by reduced hybrid viability. In reduced hybrid viability gene of different parent species may interact and impair the hybrid's development while in a reduced hybrid fertility a viable individual is sterile often due to the inability to produce normal gametes in meiosis. Hybrid breakdown; the first generation are viable and fertile, but when they mate the offspring are feeble and sterile.

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