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Which of the following is most important for speciation?

1. Seasonal isolation
2. Reproductive isolation
3. Behavioural isolation
4. Tropical isolation

Correct answer: Reproductive isolation

Solution

Reproductive isolation is the key requirement for speciation because it prevents gene flow between populations, allowing them to diverge genetically over time. Other isolating mechanisms, like seasonal or behavioral isolation, are specific ways this can happen, but they are all forms of reproductive isolation.

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