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IAT IISER2026BiologyMolecular Basis of Inheritance

Which one of the following is the correct sequence of the coding strand of the given gene?

Options

  1. A5' GTGAAGCCGTTACAGCAC 3'
  2. B5' GTGCTGTAACGGCTTCAC 3'
  3. C5' CACTTCGGCAATGTCGTG 3'
  4. D5' CACGACATTGCCGAAGTG 3'

Correct answer

B. 5' GTGCTGTAACGGCTTCAC 3'

Step-by-step solution

According to the convention, the promoter is located towards the 5' end of the coding strand. In the given figure, the promoter is present on the right side. The bottom strand has its 5' end on the right side. Thus, the bottom strand acts as the coding strand. Alternatively, the arrow for the transcription start site indicates that transcription proceeds from right to left. RNA polymerase reads the template strand in the 3' 5' direction. The top strand has its 3' end on the right, so it serves as the template stran

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