Question

if two types of beetles are able to mate, but their sperm and eggs are not compatible, thus cannot form a zygote, which isolation mechanism is in effect?

Answer 1

The isolation mechanism in effect in the scenario described is called "gametic isolation." Gametic isolation occurs when the gametes (sperm and eggs) of different species are not compatible or unable to fuse, preventing the formation of a viable zygote. While the two types of beetles may be capable of mating, the inability of their gametes to successfully fertilize each other's eggs indicates gametic isolation.

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