Question

If the following strand of DNA was replicated and transcribed, what would be the amino acid sequence in the resulting polypeptide?

5' ______________________ 3'
G T G A C C G C G A C A



A. Ser-Arg-Pro-Phe
B. Leu-Ser-His-Arg

C. His-Trp-Arg-Cys
D. Arg-Tyr-Phe-Pro

Answer 1

The correct answer is option C, His-Trp-Arg-Cys

The amino acid codon sequence is

G T G A C C G C G A C A

During transcription, complementary DNA codon sequences are produced. Thus the complementary amino acids for given sequences are –

G – C

T – A

A – T

C – G

The transcripted RNA has the following sequence

CAC TGG CGC TGT

G T G A C C G C G A C A

Name of the Tran scripted Codon Sequences

CAC – Histidine

TGG - Tryptophan

GCG – Arginine

TGT - Cysteine

His – Tryp – Arg - Cys