Question
Look at the DNA sequence.
C G T T A C T G C A A T
G C A A T G A C G T T A
Which sequence shows a substitution mutation?
(1 point)
Responses
C G T A C T G C A A T
G C A T G A C G T T A
C G T A C T G C A A T G C A T G A C G T T A
C G T C T A C T G C A A T
G C A G A T G A C G T T A
C G T C T A C T G C A A T G C A G A T G A C G T T A
C G T G A C T G C A A T
G C A C T G A C G T T A
C G T G A C T G C A A T G C A C T G A C G T T A
C G T T A C T G C A A T
G C A A T G A C G T T A
C G T T A C T G C A A T
G C A A T G A C G T T A
Which sequence shows a substitution mutation?
(1 point)
Responses
C G T A C T G C A A T
G C A T G A C G T T A
C G T A C T G C A A T G C A T G A C G T T A
C G T C T A C T G C A A T
G C A G A T G A C G T T A
C G T C T A C T G C A A T G C A G A T G A C G T T A
C G T G A C T G C A A T
G C A C T G A C G T T A
C G T G A C T G C A A T G C A C T G A C G T T A
C G T T A C T G C A A T
G C A A T G A C G T T A
Answers
Answered by
GPT-4o mini
A substitution mutation occurs when one base in a DNA sequence is replaced by another base.
Let's examine each option based on your original DNA sequence:
1. **First option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T A C T G C A A T
G C A T G A C G T T A
- The first base in the first line changes from T to A and the third base in the second line changes from A to T. This reflects multiple substitutions, so this does not represent a simple substitution mutation.
2. **Second option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T C T A C T G C A A T
G C A G A T G A C G T T A
- The first base in the first line changes from T to C and the first base in the second line changes from A to G. Again, we see multiple substitutions.
3. **Third option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T G A C T G C A A T
G C A C T G A C G T T A
- The fourth base in the first line changes from T to G and the third base in the second line changes from A to C. There are multiple substitutions again.
4. **Fourth option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T T A C T G C A A T
G C A A T G A C G T T A
- There are no changes, so this does not represent a mutation.
Based on the analysis, none of the options clearly represent a classic substitution mutation, as most involve multiple substitutions across the sequences.
However, if you must choose one response that is closest to indicating a substitution, the first option ("C G T A C T G C A A T" and "G C A T G A C G T T A") represents a single substitution in one segment (at least in the second line).
So, the best choice among these would be the first option, as it is the option that consists of the least complex mutations.
Let's examine each option based on your original DNA sequence:
1. **First option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T A C T G C A A T
G C A T G A C G T T A
- The first base in the first line changes from T to A and the third base in the second line changes from A to T. This reflects multiple substitutions, so this does not represent a simple substitution mutation.
2. **Second option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T C T A C T G C A A T
G C A G A T G A C G T T A
- The first base in the first line changes from T to C and the first base in the second line changes from A to G. Again, we see multiple substitutions.
3. **Third option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T G A C T G C A A T
G C A C T G A C G T T A
- The fourth base in the first line changes from T to G and the third base in the second line changes from A to C. There are multiple substitutions again.
4. **Fourth option:**
- Original:
C G T T A C T G C A A T
G C A A T G A C G T T A
- Mutated:
C G T T A C T G C A A T
G C A A T G A C G T T A
- There are no changes, so this does not represent a mutation.
Based on the analysis, none of the options clearly represent a classic substitution mutation, as most involve multiple substitutions across the sequences.
However, if you must choose one response that is closest to indicating a substitution, the first option ("C G T A C T G C A A T" and "G C A T G A C G T T A") represents a single substitution in one segment (at least in the second line).
So, the best choice among these would be the first option, as it is the option that consists of the least complex mutations.