Question

8. What is the complementary messenger-RNA sequence for the DNA sequence CAAGGT?
A. G-T-T-C-C-A
B. C-A-A-G-G-U
C. G-U-U-C-C-A​

Answer 1

The complementary mRNA sequence will be 'G-U-U-C-C-A'. (Option C)

• An mRNA is the messenger RNA molecule that is synthesized from a double stranded DNA during transcription.
• The synthesised mRNA will have base sequence complementary to the template strand of the DNA. This complementarity is useful for synthesis of correct sequence of amino acids.
• Hence, for the given DNA sequence- 'C-A-A-G-G-T', the correct mRNA sequence will be 'G-U-U-C-C-A'.