Speciation will only occur as a result of the formation of barriers. Which lead to ____ between members of the population. Mechanism of action acting before or after fertilization. ____ mechanism Seasonal / ____ isolation occurs when male and female mature at different time //Different species have different mating season. Ecological / ____ isolation occurs when individuals have ____ habitat preferences. Behavioral isolation occurs when different species has different ____ ____ isolation, occurs in animals where differences in ____ prevent successful copulation / in plants where related species of flowers are pollinated by different animals. ____ isolation occurs when the sperm of one species cannot fertilise the egg of another species / ____ gamete. Postzygotic mechanism Hybrid i____ occurs when the hybrids are produced but ____ to maturity. Hybrid sterility occurs when hybrids fail to produce ____. Hybrid ____ occurs when the F1 are fertile but F2 are sterile.

Discuss the isolation mechanism of speciation

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