9 terms

Prezygotic and Postzygotic Barriers

prezygotic barrier
prevent mating or fertilization between different species
postzygotic barrier
reproductive barrier that operates should interspecies mating occur and form hybrid zygotes
temporal isolation
prezygotic barrier; when different species reproduce at different times
habitat isolation
prezygotic barrier; the species remain isolated because they breed in different habitats.
behavioral isolation
prezygotic barrier; the species have differences in mating rituals
mechanic isolation
prezygotic barrier; the species are physically unable to reproduce
hybrid inviability
postzygotic barrier; the offspring (called a hybrid) does not survive
hybrid sterility
postzygotic barrier; the hybrid is infertile
hybrid breakdown
postzygotic barrier; the first-generation hybrids are viable and fertile, but when they mate the offspring are feeble and sterile