List of top Questions asked in ICAR AIEEA (PG)

Given below are two statements:
Statement (I): Mutation is an important source of genetic variations existing in any organism.
Statement (II): The rate of mutations, however, is the same in both spontaneous and induced mutations.
In light of the above statements, choose the most appropriate answer from the options given below:

During the expression of a gene in a eukaryotic organism, a series of events happen one after another. Arrange the following steps of gene expression in eukaryotes chronologically i.e. from the first to the last-
(A). Movement of the matured mRNA from the nucleus to the cytoplasm
(B). Formation of transcript (pre-mRNA) in the nucleus
(C). Removal of the introns, joining the exons, and addition of 5'cap and poly-A tail to the pre-mRNA
(D). Attachment of the mRNA with the Ribosome for translation in the cytoplasm
Choose the correct answer from the options given below:

The development of a synthetic variety in a cross-pollinated crop involves several activities that are performed serially one after another. Arrange the steps in chronological order i.e. from the beginning to the end:
(A). Production of the synthetic variety
(B). Collection of inbreds and testers (OPVs)
(C). Top cross or poly-cross test for GCA and selection of inbreds as parental lines
(D). Multilocation testing of the synthetic variety and distribution
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): In a standard PCR amplification with a co-dominant marker, a pair of primers (Forward and Reverse) is used.
Statement (II): In a standard PCR, only the segment of DNA whose 3'-ends are complementary to the two primers used only gets amplified.
In light of the above statements, choose the most appropriate answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{28.png Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{26.png Choose the correct answer from the options given below:

Breeding a crop variety involves several activities. Arrange the steps of a plant breeding program in correct chronological order-
(A). Selection of superior recombinants
(B). Collection, evaluation, and selection of diverse genotypes for hybridization
(C). Hybridization among selected parental genotypes
(D). Multilocational testing and release of a variety for commercial release
Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{27.png Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{29.png Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{30.png Choose the correct answer from the options given below:

The activities happening during RNA editing are:
(A). A change in RNA base sequence after transcription
(B). Usual addition or occasional deletion of 'U' residues
(C). Occasional addition of 'C' residues
(D). Proceeding with the editing in the 5'-3' direction of mRNA
Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{25.png Choose the correct answer from the options given below:

The main similarities between the synthetics and composite varieties of crops are:
(A). Both are relevant to allogamous species
(B). Both can be reconstituted exactly and easily
(C). Both have a broad genetic base
(D). Both are mixtures of several homozygotes and heterozygotes
Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{23.png Choose the correct answer from the options given below:

Match List-I with List-II:
\includegraphics[width=0.6\linewidth]{24.png Choose the correct answer from the options given below:

Merits of the Pedigree method of selection in crops include-
(A). It offers enough opportunity for natural selection to influence the population
(B). It takes less time than the Bulk method to develop a new variety
(C). Breeders get maximum opportunity to use their skills and judgment for the selection of desirable plants
(D). Transgressive segregants for yield and other quantitative traits may be recovered
Choose the correct answer from the options given below:

The objections to the 'Dominance Hypothesis' of heterosis and inbreeding depression are-
(A). Mostly, it is not possible to isolate inbreds as vigorous as hybrids
(B). Asymmetrical distribution of quantitative traits in the F2 population
(C). Magnitude of heterosis in inbred lines has increased over time, which was not expected as per the hypothesis
(D). Faster inbreeding depression in tetraploids
Choose the correct answer from the options given below:

In a mapping study, it was found that two genes- A and B are showing independent assortment. The probable reasons for this independent assortment are-
(A). A and B are not linked
(B). A and B are loosely linked
(C). A and B are located in two different chromosome
(D). A and B are located on the same chromosome but placed far away (\(>\) 50cM) from each other.
Choose the correct answer from the options given below:

The 'One gene-one enzyme' hypothesis was challenged by several researchers for its validity. The reasons are-
(A). Many enzymes are composed of more than one polypeptide encoded by different genes.
(B). Product of many genes are not enzymes
(C). Genes contain introns, which do not codes for any amino acids
(D). Several related polypeptides can be obtained from a single gene through alternate splicing
Choose the correct answer from the options given below:

Which of the following describes a 'gene' correctly?
(A). Genes are located on chromosome
(B). Gene is a discrete particle
(C). Recombination can happen within a gene
(D). One gene can encode more than one polypeptide
Choose the correct answer from the options given below:

Geographical Indication (GI) includes which of the following items?
(A). Goods of handicraft
(B). Natural products
(C). Old archaeological structures
(D). Agricultural produce
Choose the correct answer from the options given below:

If the values of phenotypic and environmental variances are 6.8 and 1.2, respectively, the heritability (broad sense) of the trait would be-

When two species can not be crossed directly due to incompatibility, a third species is used to make the target gene transfer possible, which is called as-

When two lines possessing two different alleles of resistance (say, DM1 and DM2) for a particular disease are crossed, the two alleles interact to induce disease resistance response in the hybrid without pathogen attack and produce necrotic lesions. Such a phenomenon is referred to as-

In a Mendelian dihybrid cross, out of 400 \(F_2\) generation plants, how many will be homozygous for at least one gene?