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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.

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57. What is RNA polymerase ? Write its functions.

RNA polymerase is the enzyme which catalyses the transcription of RNA. It is the enzyme which copies a DNA sequence into an RNA sequence, during the process of transcription.

Functions.
It initiates the transcription by attaching to the promoter.

RNA polymerase I transcribes ribosomal RNA

RNA polymerase II transcribes messenger RNA

RNA polymerase III transcribes transfer RNA.

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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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