List of top Social Science Questions

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
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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
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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.
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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?

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

The transgenic tomato variety 'FlavrSavr' had a greatly improved shelf-life and general quality. Which one of the following technologies was used to achieve this feat?

'Genetic imprinting', a process of gene silencing, is postulated to be caused by-

Which one of the following activities is NOT practiced in the Bulk method of breeding?

For which one of the following activities, the multiple copies of a specific gene/DNA sequence obtained through PCR can NOT be used for-

On average, how many fragments would a restriction enzyme, which recognizes a specific 5-base sequence in DNA, be expected to cleave a double-stranded bacteriophage with a genome size of 6066 bp into?

The probability of an individual in a population carrying two specific alleles of a human DNA marker, each of which has a frequency of 0.2, will be-

Normal adult hemoglobin (HbA) consists of-

The 'Eastern Blot' is a powerful molecular biology technique used primarily to identify and study the-

If an X-linked recessive disorder is in Hardy-Weinberg equilibrium and the incidence in males equals 1 in 100, then the expected incidence of affected homozygous females would be-

"The two strands of a DNA double helix are antiparallel". It means-

Arrange the following soil types found in India on the basis of the area under these soils starting from the smallest to the largest.
(A) Alluvial soils
(B) Red soils
(C) Black soils
(D) Arid and desert soils
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Arrange the following crops on the basis of their yield (q/ha) in the ascending order:
(A) Chickpea
(B) Pigeon pea
(C) Wheat
(D) Sugarcane
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Arrange these major rural development programmes launched in India chronologically starting from the latest to the earliest:
(A) SFDA
(B) IRDP
(C) RLEGP
(D) PMGSY
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Match List-I with List-II
{ll} List-I (Plant disease) & List-II (Nutrient deficiency)
(A) Grey speck in oats & (I) O2
(B) Black heart in potato & (II) Mn
(C) Blossom end rot & (III) Fe
(D) Chlorosis in rice & (IV) Ca

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Arrange the following institutions chronologically according to the years these were set up starting from the latest to the earliest:
(A) RLBCAU Jhansi
(B) UAS Dharwad
(C) ICAR- NDRI Karnal
(D) ICAR-CAZRI, Jodhpur
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Match List-I with List-II
{ll} List-I (Herbicide) & List-II (Mechanism of Action)
(A) Glyphosate & (I) ACCase inhibitors
(B) Atrazine & (II) ALS/AHAS inhibitors
(C) Imazethapyr & (III) EPSP synthase
(D) Diclofop methyl & (IV) PS II inhibitors

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Major wheat producing states in India are: (A) Haryana (B) Punjab (C) Uttar Pradesh (D) Madhya Pradesh. Three largest producing states of wheat in 2021-22 in India were:

Rainfall during blossoming in mango may give rise to many problems such as:
(A) It may injure un protruded pistil.
(B) It may wash away the pollen.
(C) It may provide congenial conditions for powdery mildew.
(D) It may cause Recife sickness.
Choose the correct answer from the options given below: