A normal DNA sequence is 5′-GTA GCA TCA CCA-3′. If the DNA sequence mutated to 5′-GCA GCA TCA CCA-3′, how would the peptide sequence be affected?
A) All amino acids downstream of the mutation would be misinserted.
B) The peptide would not be synthesized.
C) An Arg would replace a His.
D) A stop would replace a Trp.
E) No change would occur.

Question

Quizplus · Accepted Answer

The mutation changes one base in the original DNA sequence, resulting in a change from a histidine (CAT) to an arginine (CGA). This changes the codon for the amino acid at that position in the peptide sequence.

A Normal DNA Sequence Is 5′-GTA GCA TCA CCA-3′