GPB MCQ Quiz 156 for ICAR JRF/SRF/ARS Exam Preparation

Genetic variability that is available for selection to act on is called

A) Free genetic variability

B) Potential genetic variability

C) Heterozygotic potential variability

D) None of the above

The superiority of an F₁ hybrid over both of its parents in terms of yield or some other character is called

A) Heterosis

B) Luxuriance

C) Both

D) None of the above

The heterosis occurs due to over-dominance gene action i.e. superiority of heterozygotes over both the corresponding homozygotes is called

A) Balanced heterosis

B) Useful heterosis

C) Mutational heterosis

D) None of the above

The heterosis which results from dominance gene action is masking of the deleterious effects of recessive mutant alleles by their dominant counterparts is called

A) Mutational heterosis

B) Useful heterosis

C) Balanced heterosis

D) None of the above

In seed certification programme, variety developed by mass selection are

A) Lesser difficult to identify than pureline varieties

B) More difficult to identify than pureline varieties

C) Both

D) None of the above

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