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Q20.The method which was first developed for gene mapping in bacteria was (A) Transformation in 1928(B) Conjugation in 1946(C) Transduction in 1952(D) Transformation in 1944 The correct answer is (B) […]

Q19.Which of the following is NOT a characteristic feature of bony fishes? (A) Presence of paired fins(B) Laterally compressed body(C) Presence of homocercal tail(D) Presence of placoid scales Placoid scales […]

Q18.Which of the following animal has a pseudocoel? (A) Ascaris(B) Fasciola(C) Beroe(D) Sea anemone Ascaris has a pseudocoelom, making (A) the correct answer. A pseudocoelom is a fluid-filled body cavity […]

Q17.Which DNA repair system is affected in Lynch syndrome? (A) Nucleotide excision repair(B) Base excision repair(C) Mismatch repair(D) Repair of double strand breaks Lynch syndrome affects the mismatch repair (MMR) […]

Q16.In anaerobic conditions, yeast consumes more glucose than in the presence of aerobic environment. This phenomenon is known as- (A) Hatch and Slack effect(B) Emerson enhancement effect(C) Warburg effect(D) Pasteur […]

Q15.Bacteria produce an enzyme methylase which mainly plays a role in (A) Modification of DNA(B) Cutting of DNA(C) Repair of DNA(D) Rearrangement of DNA Correct option: (A) Modification of DNA Introduction […]

Q14.Which of the following condition is NOT essential to maintain Hardy-Weinberg equilibrium in a population? (A) Large randomly mating population(B) Small randomly mating population(C) Absence of gene flow(D) Absence of […]

Q13.The replication on template strand always proceeds in 5′ to 3′ direction. If the sequence of template strand is 5’ATCCCT3′, how would the correct sequence of newly synthesized strand of […]

Q12.Blood group antigen differs in their (A) Glycosylation pattern(B) Phosphorylation pattern(C) Methylation pattern(D) Ubiquitinylation pattern Correct option: (A) Glycosylation pattern Introduction Blood group antigens are specific molecular structures present on the […]

Q11.A class of Immunoglobulin present in the serum which neutralizes toxins, activates complements and crosses the placenta to protect the fetus and neonate is: (A) IgD(B) IgE(C) IgG(D) IgM IgG […]