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Molecular Basis of Inheritance

Short Answer Type

51.

Explain Central Dogma of flow of information.

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52.

Give a schematic structure of transcription unit.

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Long Answer Type

53. Explain briefly transcription.

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54. What are retroviruses ? How has their discovery led to the modification of central dogma in molecular biology ?

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Short Answer Type

55. What is retrovirus ?

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Long Answer Type

56. What is genetic code ? List the properties of genetic code.

Genetic code is the set of three letter word or Codon which guides and directs the synthesis of amino acids.

Properties of genetic code are

(i) The code is triplet .
(ii) The code is specific that is one codon code for only one amino acid.
(iii) The code is de-generate that is some amino acids are coded by more than one codon.
(iv) The codon is contiguos.
(v) The code is nearly universal.

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57. What is RNA polymerase ? Write its functions.

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One Word Answers

58.

What is the full form of VNTR

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Short Answer Type

59. Suppose during transcription of DNA code AAA, a mistake occurs due to which UUG code of RNA is formed. Due to this what change in picking the type of amino acid would occur during synthesis of protein.

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60. What is the role of AUG?

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