GPB MCQ Quiz 154 for ICAR JRF/SRF/ARS Exam Preparation

A mutant allele would be homozygous only when

A) Both the copies of a gene present in a cell mutate at the same time to produce the same mutant allele

B) The mutant allele is already present in the heterozygous condition in the original clone

C) In both cases

D) Never possible

The main problems peculiar to clonal crops

A) Reduced flowering and fertility

B) Difficulties in genetic analysis

C) Perennial life cycle

D) All the above

The strategy of conventional or traditional breeding approaches

A) To select for yield

B) To correct a specific defect

C) Either i or ii

D) None of the above

The term ideotype was introduced by

A) Donald 1962

B) Donald 1968

C) Beaven 1914

D) Donald 1976

An ideotype where performance is measured as grain yield per hectare is called

A) Crop ideotype

B) Competition ideotype

C) Isolation ideotype

D) None of the above

Salinity tolerance, mineral toxicity/deficiency tolerance are example of

A) Stress ideotype

B) Edaphic ideotype

C) Disease ideotype

D) Climate ideotype

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