Question

Using the DNA strand below, select the answer choice that displays the correct polypeptide sequence. DNA TAC/GCA/TTA/GGC/AAC/ACT a Meth-Ile-Pro-Gln-Leu-stop b Meth-Arg-Val-Ala-Trp-stop c Meth-Arg-Asn-Thr-Ala-stop d Meth-Arg-Asn-Pro-Leu-stop

Answer 1

Answer:

d Meth-Arg-Asn-Pro-Leu-stop

Explanation:

This question is describing the processes of transcription and translation of protein synthesis. Transcription is the synthesis of mRNA from DNA while translation is the synthesis of amino acid from mRNA. In this question, the following DNA sequence is given:

TAC/GCA/TTA/GGC/AAC/ACT

- Following the complementary base pairing rule i.e A-U, G-C, T-A etc, the following mRNA transcript will be produced after transcription:

AUG/CGU/AAU/CCG/UUG/UGA

- Using the genetic code, the following amino acid sequence will be produced from the above mRNA sequence after translation:

Methionine/Arginine/Asparagine/Proline/Leucine/STOP.