List of top Plant Sciences Questions on Genetics asked in ICAR AIEEA (PG)

If an autosomal recessive disorder, which shows Hardy-Weinberg equilibrium, has an incidence of 1 in 6400, then the frequency of a carrier is approximately -

The following genotypes are found in a population: AA/35, Aa/25, and aa/10. What are the allele frequencies of A and a ?

If the frequency of males affected with an X-linked recessive allele in a human population is 0.10 (1 in 10), what will be the expected frequency of affected females ?

In molecular marker technologies, the acronym RFLP stands for:

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Atavism refers to the reappearance of a trait after it remains hidden for several generations.
Reason R: The chance combination of genes allows long-suppressed hidden traits to reappear and express.
In light of the above statements, choose the correct answer from the options given below:

The test cross ratio for a trait governed by two genes with masking gene action will be-

Which one of the following characteristics is NOT true for 'genetic drift'?

Consider a cross where some offspring in a generation have genotype ppqqrr. Which of the following genotypes CAN be a genotype of either of the parents?

Which of the following processes cause losses of nitrogen from the cultivated soils
A. Leaching
B. Volatilization
C. Biological nitrogen fixation
D. Denitrification
E. Green manuring
Choose the most appropriate answer from the options given below:

Given below are two statements
Statement I: The light-dependent reactions occur in the stroma in presence of light
Statement II: The light-independent reactions occur in the thylakoid in the absence of light
In light of the above statements, choose the most appropriate answer from the options given below

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: In reciprocal recurrent selection, the two populations so developed can be used as synthetic variety.
Reason R: In reciprocal recurrent selection, the GCA of both the population is improved simultaneously.
In light of the above statements, choose the correct answer from the options given below.

In genetic analysis, the effect of tight-linkage may create confusion with which of the following events?

The genotype of a plant is \(AaBbDd\). The genes \(A\) and \(B\) are linked in coupling phase with a map distance of \(10\) cM. The gene \(D\) is present in different chromosome. Under such situation, the frequency of \(AbD\) gametes would be?

A tall greengram plant was crossed with a dwarf plant. All the $F_1$ plants were of intermediate height. The $F_2$ plants produced different phenotypic classes (plant height) in the ratio of 1:4:6:4:1. How many genes are involved in controlling the plant height?

Given below are two statements:
Statement I: Hybrids are heterozygous and homogenous.
Statement II: Pure lines are heterozygous and heterogeneous.
In light of the above statements, choose the most appropriate answer from the options given below:

'Stock 6' is a haploid inducer line of:

Which of the following statements is NOT true for Koch's postulates?
A. A specific organism can always be found in association with a given disease
B. The organism can be isolated from a diseased animal and grown in pure culture in the laboratory
C. The pure culture will produce the disease when inoculated into a resistant animal
D. The pure culture will not produce the disease when inoculated into a susceptible animal
E. It is possible to recover the organism in pure culture from the experimentally infected animal
Choose the correct answer from the options given below:

Which of the following is NOT a non-sense codon?

Match List I with List II