Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Genetic code

1) Genetic code translated the language of 
a)amino acids into that of RNA
b) Proteins into that of RNA
c) RNA into that of DNA
d) RNA into that of proteins

2. Genetic code is not
a)overlapping
b)with commas 
c)universal
d)degenerate

3. UAA is known as
a)Opal
b)Amber
c)Ochre
d)None of these

4. Leucine is coded by 
a) UUA
b) CCC
c) AAA
d) UAA

5. Amber is
a)AAA
b)GGG
c)UAG
d)CCC

6. Opal is a termination codon represented by triplet codon in RNA
a)UUG
b) UGA
c) AGU
d) UUU

7. The number of nonsense codons in the genetic code dictionary is 
a)1
b)2
c)3
d)4

8. Wobble hypothesis was proposed by
a)Watson
b)Crick
c)Nirenberg
d)Watson and Crick

9. Which one of the following is not an mRNA codon
a)UUG
b) UCU
c) TAC
d) UUU

10. The initiator AUG in prokaryotes codes for 
a) Valine
b)Formyl methionine  
c) Phenyl alanine
d) Tyrosine
Answers:
1. d) RNA into that of proteins
2. b)with commas 
3. c)Ochre
4. a) UUA
5. c)UAG
6. b) UGA
7. c)3
8. b)Crick
9. c) TAC
10. b)Formyl methionine  

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