Question

Read the sequence of the nucleotides in the given segment of $mRNA$ and the respective amino acid sequence in the polypeptide chain.

Polypeptide Met— Phe— Met— Pro—Val—Ser
(i) Triplet bases (codons) for (a) Valine (b) Proline
(ii) Nucleotide sequence of the DNA strand from which this mRNA was transcribed
(iii) Last codon of this RNA stands for
The correct answer to the question (i), (ii) and (iii) are

• A. $(i)$ Valine, GUU Proline, CCU. $(ii)$ TACAAATAC GGA CAAAGAATT. $(iii)$ Stop.
• B. $(i)$ Valine, GGU Proline, CCU. $(ii)$ TACAAATAC GGA CAA AGA ATT. $(iii)$ Stop.
• C. $(i)$ Valine, GUU Proline, CCC. $(ii)$ TACAAATAC GGA CAA AGA ATT. $(iii)$ Stop.
• D. $(i)$ Valine. GUU Proline, CCU. $(ii)$ ATGTTTATG CCT GTTTCTTAA. $(iii)$ Stop.

Answer 1

Answer: (A)

Correct answer is (a) $(i)$ Valine, GUU Proline, CCU. $(ii)$ TACAAATAC GGA CAAAGAATT. $(iii)$ Stop.