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NEETZoologyMolecular Basis of Inheritance

In bacteria, the process of transcription is catalysed by which of the following enzymes, and what is its direction of polymerisation?

Options

  1. ADNA-dependent RNA polymerase catalysing polymerisation in 3^ 5^ direction
  2. BDNA-dependent RNA polymerase catalysing polymerisation in 5^ 3^ direction
  3. CRNA-dependent RNA polymerase catalysing polymerisation in 5^ 3^ direction
  4. DDNA-dependent DNA polymerase catalysing polymerisation in 5^ 3^ direction

Correct answer

B. DNA-dependent RNA polymerase catalysing polymerisation in 5^ 3^ direction

Step-by-step solution

In bacteria, transcription is the process of copying genetic information from one strand of the DNA into RNA. This process is catalysed by a single DNA-dependent RNA polymerase. Similar to DNA polymerase, the DNA-dependent RNA polymerase also catalyses polymerisation in only one direction, that is, 5^ 3^ . The DNA strand that has the polarity 3^ 5^ acts as a template. Answer: DNA-dependent RNA polymerase catalysing polymerisation in 5^ 3^ direction

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