UPSC | Prelims GS | 2026

The DRT3b enzyme described in the newspaper is notable because it:

  1. Produces an ordered DNA sequence without a nucleic-acid template
  2. Translates mRNA directly into a functional protein without ribosomes
  3. Replicates an entire chromosome without nucleotides
  4. Converts proteins into amino acids in a lysosome

Answer

Correct Answer

Produces an ordered DNA sequence without a nucleic-acid template

Explanation

Option A is correct: DRT3b makes a defined alternating C-A DNA sequence without a nucleic-acid template. Option B confuses transcription or translation and does not describe the finding. Option C exaggerates the result; the enzyme makes a simple sequence, not an entire chromosome. Option D is unrelated to nucleic-acid synthesis and lysosomal digestion.

Topics: central dogma, drt3b enzyme, molecular biology, science and technology