Question

Before DNA is replicated, it reads AGATCGAGT. An external factor causes a mutation to the sequence, and it now reads: AAATCGAGT.

How would the amino acid sequence produced by the mutant strand compare to the amino acid sequence made by the original strand?

codon chart

Group of answer choices

Only one amino acid in the sequence would change.

More than one amino acid in the sequence would change.

The amino acid sequence would be shorter.

The amino acid sequence would remain unchanged.

Answer 1

Answer: only one amino acid in the sequence changes

Explanation: if you change both sequences given to rna sequences in the first one all the amino acids you get are serine. in the second sequence of you change them to rna then do the chart they all are serine but one which is phenylalaine.

Answer 2

The amino acid sequence would be shorter.

Based on the codon chart, if the DNA strand mutates from AGATCGAGT to AAATCGAGT, then the amino acid sequence would be shorter.

Here's why:

The original DNA strand, AGATCGAGT, codes for the following amino acids: methionine-alanine-asparagine-arginine-glycine.
The mutation changes the first codon from AGAT to AAAT.
In the codon chart, AGAT codes for methionine, but AAAT does not code for any amino acid.
Therefore, the ribosome would not be able to recognize AAAT as a valid codon and would stop translation at this point.
As a result, the amino acid sequence produced by the mutant strand would be only methionine-alanine, which is shorter than the sequence produced by the original strand.