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If sequence in DNA is CCCTAGAG, then what would be the sequence in messenger RNA after transcription?

Correct answer: A. GGGAUCUC

  • A. GGGAUCUC
  • B. GGGATCTC
  • C. GGAAUCUC
  • D. GGGGTCTC

Explanation

C pairs with G, A pairs with T in DNA while A pairs with U in RNA. The question asks for the corresponding mRNA sequence, after transcription of the DNA sequence. The C bases will correspond to G bases on the mRNA, T will correspond to A, G will correspond to C, whereas A will correspond to U and not T because the transcript is made up of RNA and not DNA, hence U takes the place of T. Option A describes the correct transcript: C C C T A G A G G G G A U C U C

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