Slide 31 Quiz Study Guide
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8 Terms
Habitat isolation (prezygotic barrier)
populations live in different habitats and do not meet
behavioral isolation (prezygotic barrier)
little or no sexual attraction between males and females
temporal isolation (prezygotic barrier)
mating or flowering occurs at different seasons or times of day
Mechanical isolation (prezygotic barrier)
structural differences in genitalia or flowers prevent copulation or pollen transfer
gametic isolation (prezygotic barrier)
female and male gametes fail to attract each other or are inviable
reduced hybrid viability (postzygotic barrier)
hybrid zygotes fail to develop or fail to reach sexual maturity
reduced hybrid fertility (postzygotic barrier)
hybrids fail to produce functional gametes
hybrid breakdown (postzygotic barrier)
offspring of hybrids have reduced viability or fertility
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