Question

11 of 15 questions remaining
what type of mutation is mutated dna sequence #1? (remember that there could be 1 substitution, 1 bases deleted, 1 bases inserted, etc.)
a point substitution
b insertion (frameshift mutation)
c deletion (frameshift mutation)
question 6
0.5 points
what effect does this mutation have on the protein, compared to the original?
a no change
b 1 amino acid changed
c premature stop signal
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Explanation:

For the first question, a point - substitution mutation involves the replacement of a single base in the DNA sequence. Insertion and deletion can cause frameshift mutations which shift the reading frame of the genetic code. Without seeing the actual DNA sequence, we can't be sure, but a point - substitution is a common mutation type described. For the second question, a point - substitution can result in a single amino - acid change if it occurs in a coding region and changes the codon to one that codes for a different amino acid. A premature stop signal can occur if the mutation creates a stop codon. No change can happen if the mutation is a silent mutation (codes for the same amino acid).

Answer:

Question 5: A. Point substitution
Question 6: B. 1 amino acid changed