What is incorrect about the following figure representing DNA replication?

(1) The direction of DNA replication in strand (i).

(2) The direction of DNA replication in strand (ii).

(3) Discontinuous replication of strand (i)

(4) Discontinuous replication of strand (ii).

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The binding site of tRNA with mRNA & amino acids respectively are

(1) mRNA with DHU loop and amino acid with CCA end.

(2) mRNA with CCA end and amino acid with anticodon loop.

(3) mRNA with anticodon loop and amino acid with DHU loop.

(4) mRNA with anticodon loop and amino acid with CCA end.

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Which of the following is correct regarding genetic code?

(1) UUU is the initiation codon which also codes for phenylalanine.

(2) There are 64 triplet codons and only 20 amino acids.

(3) Three random nitrogen bases specify the placement of one amino acid.

(4) UAA is the nonsense codon which also codes for methionine.

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Which of the following set of options is used in translation?

(1) hnRNA, tRNA, rRNA

(2) mRNA, tRNA, rRNA

(3) mRNA, tRNA, hnRNA

(4) hnRNA, rRNA, tRNA

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In a 3.2 Kbp long piece of DNA, 820 adenine bases were found. What would be the number of cytosine bases?

(1) 780

(2) 1560

(3) 740

(4) 1480

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Some of the steps of DNA fingerprinting are given below. Identify their correct sequence from the potions given.

A. Electrophoresis of DNA fragments

B. Hybridisation with DNA probe

C. Digestion of DNA by restriction endonucleases

D. Autoradiography

E. Blotting of NDA fragments to nitrocellulose membrane

(1) C – A – B – E – D

(2) C – A – E – B – D

(3) A – E – C – B – D

(4) A – C – E – D – B

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If the sequence of bases in the coding strand of a double stranded DNA is 5’-GTTCGAGTC-3’, the sequence of bases in its transcript will be

(1) 5’-GACUCGAAC-3’

(2) 5’-CAAGCUCAG-3’

(3) 5’-GUUCGAGUC-3’

(4) 5’-CUGAGCUUG-3’

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Refer to the given figure and select the correct option regarding its parts labelled as A, B and C.

(1) A-Histone octamer, C-DNA

(2) B-H1 histone, C-Histone octamer

(3) A-H1 histone, B-DNA

(4) A-Histone octamer, C-H1 histone

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Match the triplet codons listed in column I with their amino acids mentioned in column II and select the correct option from the given codes.

  Column I

   Column II

A. GGG

(i) Proline

B. UUU

(ii) Glycine

C. CCC

(iii) Arginine

D. AAA

(iv) Phenylalanine

 

(v) Lysine

(1) A-(v), B-(iii), C-(i), D-(ii)

(2) A-(v), B-(iii), C-(i), D-(iv)

(3) A-(ii), B-(iv), C-(i), D-(v)

(4) A-(i), B-(ii), C-(iii), D-(iv)

Please attempt this question first.

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Match the following column

Column I

Column II

I. Multigenes

(i) transposons

II. Inducible genes

(ii) insulin

III. Overlapping genes

(iii) B, E and k in ϕ × 174

IV. Structural genes

(iv) snRNA

 

(v) globin gene

 

(vi) nitrate reductase

 

I

II

III

IV

(1)

(i)

(iii)

(v)

(ii)

(2)

(v)

(vi)

(iii)

(ii)

(3)

(iv)

(v)

(vi)

(i)

(4)

(i)

(ii)

(v)

(vi)

 

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