Which of the following codons is known as ochre?
1. UAG
2. UGA
3. UAA
4. UUU

Subtopic:  Genetic Code |
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Which of the following is an ambiguous codon?
1. AUG
2. GUG
3. UAG
4. GAG
Subtopic:  Genetic Code | Search for Genetic Material | Transcription |
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Which property of genetic code is utilised in the wobble hypothesis?
1. Degeneracy 
2. Non-overlapping 
3. Non-ambiguous
4. universal
Subtopic:  Genetic Code |
 52%
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Activation of amino acids during translation is done by 
1. Peptidyl transferase 
2. Aminoacyl-tRNA synthetase
3. Methionine 
4. Initiation factors
 
Subtopic:  Translation |
 86%
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Movement of ribosome on mRNA is called 
1. Transcription 
2. Translation
3. Translocation
4. Protein synthesis 
Subtopic:  Translation |
 59%
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The elongation factors required  for prokaryotes are 
1. \(\text { EF-Tu and EF-Ts }\)
2. eEF1
3. elF2
4. eEF2
Subtopic:  Translation |
 57%
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The mechanism by which a gene is able to express itself in the phenotype of an organism is called
1. Gene expression 
2. RNA synthesis 
3. Translocation 
4. Formylation
Subtopic:  Translation |
 85%
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The genes which are constantly expressing themselves in cell are called 
1. Luxury genes
2. constitutive genes
3. Non-constitutive genes
4. Both (1) & (3)
Subtopic:  Translation |
 68%
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How many structural genes are present in lac-operon of E. coli
1. 4
2. 3
3. 2 
4. 1
Subtopic:  Gene Regulation: Lac Operon |
 80%
From NCERT
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In lac-operon, \(\beta\)-galactosidase enzyme is made by 
1. lac-y
2. lac-a
3. lac-z
4. lac-i
 
Subtopic:  Gene Regulation: Lac Operon |
 91%
From NCERT
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