Q. Based on their function, find the odd one out
✅ Correct Answer: (D)
snRNA
Molecular Biology and Genetics MCQs | Page - 1
Dear candidates you will find MCQ questions of Molecular Biology and Genetics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. For their efficient translation, eubacterial mRNAs possess a Shine-Dalgarno sequence for its recognition by an anti-Shine-Dalgarno sequence (ASD) in the ribosomes. The correct statement is
✅ Correct Answer: (C)
ASD is present in 16S rRNA
Q. Peptidyl transferase activity resides in
✅ Correct Answer: (B)
23S rRNA
Q. DNA helicases catalyze the reaction
✅ Correct Answer: (B)
DNA unwinding
Q. The formation of peptide cross links between adjacent glycan chains in cell wall synthesis is called
✅ Correct Answer: (D)
Transpeptidation
Q. In a relatively large but finite and closed population of sexually reproducing diploid organisms, the frequency of homozygous genotype PP changes from 0.40 to 0.50 and that of pp changes from 0.40 to 0.41 in a span of 10 generations. Which of the following is the most likely cause for the above change in frequency of the PP genotype?
✅ Correct Answer: (C)
Selection
Q. In nature, the horizontal gene transfer across bacteria is mediated by
✅ Correct Answer: (B)
Conjugation and transformation
Q. Which one of the following covalent linkages exists between 7-Methyl guanosine (m7G) and mRNAs?
✅ Correct Answer: (C)
5' - 5' triphosphate
Q. siRNA(s) interfere at
✅ Correct Answer: (B)
Post-transcriptional level
Q. Hypophosphatemia is manifested by an X-linked dominant allele. What proportion of the offspring from a normal male and an affected heterozygous female will manifest the disease?
✅ Correct Answer: (A)
$${1 \over 2}$$ sons and $${1 \over 2}$$ daughters
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