A reproductive barrier that is caused by two species producing hybrids (offspring) that are vigorous but cannot produce viable offspring themselves. Select one: a. reduced hybrid fertility b. hybrid breakdown c. reduced hybrid viability
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Step 1: Understand that the reproductive barrier in question is caused by two species producing hybrids that are vigorous but cannot produce viable offspring themselves. Show more…
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Hybrid breakdown occurs when species hybrids a. do not develop past the early embryonic stages. b. have a reduced life span. c. are infertile. d. are fertile but produce offspring with reduced viability and fertility. e. produce offspring that express the traits of only one of the original species.
Hybrid breakdown occurs when interspecies hybrids a do not develop past the early embryonic stages. b have a reduced life span. c are infertile. d are fertile but produce offspring with reduced viability and fertility. e produce offspring that express the traits of only one of the original species.
Adi S.
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 barricrs would lessen and the two parent species would fuse.
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