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%
From NCERT
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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 |
 70%
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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 |
 89%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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 |
 89%
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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%
From NCERT
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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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Imagine an error occurring during DNA replication in a cell, so that where there is supposed to be a T in one of the genes there is instead a G. What effect will this probably have on the cell?
(1) The amino acid sequence of one of its kinds of proteins will be completely changed

(2) An amino acid will be missing from each of its kinds of proteins

(3) One of its kinds of proteins might contain an incorrect amino acid

(4) An amino acid will be missing from one of its kinds of proteins.

Subtopic:  Genetic Code: II | Genetic Code |
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