When two unrelated individuals or lines are crossed, the

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When two unrelated individuals or lines are crossed, the performance of F₁ hybrid is often superior to both parents. This phenomenon is called:

1. heterosis
2. transformation
3. splicing
4. metamorphosis

Correct Option: A

Heterosis or hybrid vigor occurs when two unrelated individuals or lines are crossed, the performance of F₁ hybrid, which is often superior to both is parents.