Author Question: Rocky Mountain juniper (Juniperus scopulorum) and one-seeded juniper (J. monospe (Read 2037 times)

j_sun

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Rocky Mountain juniper (Juniperus scopulorum) and one-seeded juniper (J. monosperma) have overlapping ranges. If pollen grains (which contain sperm cells) from one species are unable to germinate and make pollen tubes on female ovules (which contain egg cells) of the other species, then which of these terms is applicable?
A) behavioral isolation
B) mechanical isolation
C) hybrid breakdown
D) reduced hybrid viability



coco

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Hey again :D

I'm guessing it's B. It makes sense.



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