Molecular Genetics(Life Sciences ) Questions and Answers

Question 1. C-value in genome represents___________
  1.    Genetic disorders
  2.    Phenotypic variation
  3.    Amount of DNA present in the genome
  4.    Qualitative traits
Explanation:-
Answer: Option C. -> Amount of DNA present in the genome
Answer: (c).Amount of DNA present in the genome
Question 2. How does genome complexity of denatured DNA measure?
  1.    Giemsa staining
  2.    Reverse chromatography
  3.    Denaturation kinetics
  4.    Renaturation kinetics
Explanation:-
Answer: Option D. -> Renaturation kinetics
Answer: (d).Renaturation kinetics
Question 3. What is the genome size of yeast?
  1.    12
  2.    120
  3.    170
  4.    3,300
Explanation:-
Answer: Option A. -> 12
Answer: (a).12
Question 4. Eukaryotes and prokaryotes have either DNA genome or RNA genome.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option B. -> False
Answer: (b).False
Question 5. Name the phenomenon which shows the lack of correlation in genome size and genetic complexity.
  1.    Histogram
  2.    Karyogram
  3.    Dendrogram
  4.    C-value paradox
Explanation:-
Answer: Option D. -> C-value paradox
Answer: (d).C-value paradox
Question 6. Name the sequence of RNA, which is recognized by a small subunit of the ribosome.
  1.    Rho utilization site
  2.    Downstream sequence
  3.    Upstream sequence
  4.    Shine Dalgarno sequence
Explanation:-
Answer: Option D. -> Shine Dalgarno sequence
Answer: (d).Shine Dalgarno sequence
Question 7. Which of the following is considered as a start codon?
  1.    AUG
  2.    GUG
  3.    UAG
  4.    AGG
Explanation:-
Answer: Option A. -> AUG
Answer: (a).AUG
Question 8. Which of the following is not true to the nature of the genetic code?
  1.    Codon is triplet
  2.    Codons are commaless
  3.    Codons are overlapping
  4.    Codons are universal
Explanation:-
Answer: Option C. -> Codons are overlapping
Answer: (c).Codons are overlapping
Question 9. Mark the one, which is NOT a stop codon?
  1.    UAA
  2.    UAG
  3.    UGA
  4.    GGA
Explanation:-
Answer: Option D. -> GGA
Answer: (d).GGA
Question 10. Who explained the wobble hypothesis?
  1.    Darwin
  2.    Watson and Crick
  3.    Samuel B. Weiss
  4.    Nirenberg
Explanation:-
Answer: Option B. -> Watson and Crick
Answer: (b).Watson and Crick
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