The locations in human genome which differ by a single base difference is known as

(1)Single nucleotide mutation

(2)Single nucleotide polymorphism

(3)RFLP

(4)Single nucleotide polymorphogenesis

Subtopic:  Genetic Code: II | Genetic Code |
 81%
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The largest known human gene is

(1) Dystrophin protein gene on X chromosome

(2) Sry gene on Y chromosome

(3) Dystropin protein gene on Y chromosome

(4) Sry gene on X chromosome

Subtopic:  Human Genome Project |
 79%
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If an E.coli with heavy DNA allow to grow for 80 minutes in a culture medium of 14 NH 4

Cl, then what would be the proportion of heavy,light and hybrid densities DNA molecule

respectively?

1. 1/16 : 1/16 : 14/16

2. 0/16 : 14/16 : 2/16

3. 1/16 : 14/16 : 1/16

4. 1/8 : 2/8 : 6/8

Subtopic:  DNA Replication: I | DNA Replication |
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Alec Jeffrey’s name is associated with

a. DNA sequencing

b. DNA fingerprinting

c. RNA sequencing

d. Gene cloning

Subtopic:  DNA Fingerprinting |
 90%
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Which of the following RNA polymerase catalyses the formation of transfer RNA in eukaryotes?

(1) RNA polymerase I                        

(2) RNA polymerase II

(3) RNA polymerase I and II              

(4) RNA polymerase III

Subtopic:  Transcription: IV | Transcription |
 73%
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Out of 64 codons how many of them code for amino acids?

(1) 64                            

(2) 20                            

(3) 61                            

(4) 32

Subtopic:  Genetic Code: II | Genetic Code |
 82%
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Circular DNA is found in:
(1) Viruses

(2) Bacteria, chloroplast and mitochondria

(3) Chloroplast and mitochondria alone

(4) All of these

Subtopic:  DNA Replication: II | DNA Replication |
 55%
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If in a DNA molecule cytosine is 18%, the percentage of adenine would be:

(a) 18%                (b) 32%                (c) 36%                (d) 64%

Subtopic:  The DNA |
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Isotopes used in proving semiconservative replication of DNA were:

(1) 14N 14C            

(2) 14N 15N            

(3) 14N 31P             

(4) 14C 31P

Subtopic:  DNA Replication: I | DNA Replication |
 94%
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Bacterial nucleoid has:

(1) One single-stranded DNA            

(2) One double-stranded DNA

(3) Two single-stranded DNA             

(4) Many double-stranded DNAs

Subtopic:  DNA Replication: II | DNA Replication |
 62%
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