When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior
When two unrelated individuals or lines are crossed, the performance of F1 hybrid is often superior to both its parents. This phenomenon is called
(a) transformation
(b) splicing
(c) metamorphosis
(d) heterosis
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Correct Option (d) heterosis
Explanation:
The superiority of hybrids over either of the parents (dominant or recessive) is called hybrid vigour (G. Shull). Heterosis is equivalent of hybrids vigour.
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