Which of the following is nonsense codon?

(1) UAG

(2) UAA

(3) UGA

(4) all the above

Subtopic:  Genetic Code: III | Genetic Code |
 93%
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Frameshift mutation occurs when

(1) base is substituted

(2) base is deleted or added

(3) anticodons are absent

(4) none of these

Subtopic:  Genetic Code: II | Genetic Code |
 86%
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Wobble hypothesis was given by

(1) R.W. Holley

(2) M. Nirenberg

(3) H.G. Khorana

(4) F.H.C. Crick

Subtopic:  DNA Double Helix |
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Which one of the following pairs of terms / names mean one and the same thing?

(1) Gene pool - genome

(2) Codon – gene

(3) Cistron – triplet

(4) DNA fingerprinting - DNA profiling

 

Subtopic:  DNA Fingerprinting |
 64%
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What is true about tRNA?

(1) It binds with an amino acid at it 3’ end

(2) It has five double stranded regions

(3) It has a codon at one end which recognizes the anticodon on messenger RNA

(4) It looks like clover leaf in the three dimensional structure.

Subtopic:  Translation |
 52%
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Which one of the following correctly represents the manner of replication of DNA?

(1)

(2)

(3)

(4)

 

Subtopic:  DNA Replication:III | DNA Replication |
 63%
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Which one of the following codons codes for the same information as UGC?

(1) UGU

(2) UGA

(3) UAG

(4) UGG

Subtopic:  Genetic Code: I | Genetic Code |
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The total number of nitrogenous bases in human genome is estimated to be about

1. 3.5 million

2. 35 thousand

3. 35 million

4. 3.1 billion

Subtopic:  The DNA |
 56%
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What is the first step in the Southern Blot technique?

(1) Denaturation of DNA on the gel for hybridization with specific probe

(2) Production of a group of genetically identical cells

(3) Digestion of DNA by restriction enzyme

(4) Isolation of DNA from a nucleated cell such as the one from the scene of crime

Subtopic:  DNA Fingerprinting |
 67%
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Given below is a representation of a kind of chromosomal mutation. What is the kind of mutation represented?

(1) Deletion

(2) Duplication

(3) Inversion

(4) Reciprocal translocation

Subtopic:  Genetic Code: II | Genetic Code |
 67%
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