Q177 / 200 · NEET 2011 (Screening) · Zoology

When two unrelated individuals or lines are crossed, the performance of $F_1$ hybrid is often superior to both its parents. This phenomenon is called

A
transformation
B
splicing
C
metamorphosis
Correct answer
D
heterosis

Solution

The superiority of hybrids over either of the parents (dominante or recessive is called hybrid vigour (G. Shull). Heterosis is equivalent of hybrids vigour.

Hence, the correct answer is option: 'D'.

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