Question
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18 of 3518 of 35 Items
Question
A scientist is tracking the evolution of a gene in giant African snails that determines the direction of the spiral in shells. The following DNA sequence data was taken from a population of giant African snails:
DNA from Snail Parent for Corkscrew Shell Gene:
A
A
T
G
C
G
T
A
T
G
T
T
A
C
G
C
A
T
A
C
DNA from Snail Offspring #1 for Corkscrew Shell Gene:
A
A
T
T
C
G
T
A
T
G
T
T
A
A
G
C
A
T
A
C
DNA from Snail Offspring #2 for Corkscrew Shell Gene:
A
A
T
C
G
T
A
T
G
T
T
A
G
C
A
T
A
C
DNA from Snail Offspring #3 for Corkscrew Shell Gene:
A
A
T
G
C
G
T
A
T
G
G
T
T
A
C
G
C
A
T
A
C
C
DNA from Snail Offspring #4 for Corkscrew Shell Gene:
A
A
T
G
C
G
T
A
T
G
T
T
A
C
G
C
A
T
A
C
Compared to the parent’s DNA sequence, identify the snail offspring that has a substitution mutation in the corkscrew shell gene.
(1 point)
Responses
Offspring #4
Offspring #4
Offspring #3
Offspring #3
Offspring #1
Offspring #1
Offspring #2
Offspring #2
Remaining Attempts : 1View previous attempt
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18 of 3518 of 35 Items
Question
A scientist is tracking the evolution of a gene in giant African snails that determines the direction of the spiral in shells. The following DNA sequence data was taken from a population of giant African snails:
DNA from Snail Parent for Corkscrew Shell Gene:
A
A
T
G
C
G
T
A
T
G
T
T
A
C
G
C
A
T
A
C
DNA from Snail Offspring #1 for Corkscrew Shell Gene:
A
A
T
T
C
G
T
A
T
G
T
T
A
A
G
C
A
T
A
C
DNA from Snail Offspring #2 for Corkscrew Shell Gene:
A
A
T
C
G
T
A
T
G
T
T
A
G
C
A
T
A
C
DNA from Snail Offspring #3 for Corkscrew Shell Gene:
A
A
T
G
C
G
T
A
T
G
G
T
T
A
C
G
C
A
T
A
C
C
DNA from Snail Offspring #4 for Corkscrew Shell Gene:
A
A
T
G
C
G
T
A
T
G
T
T
A
C
G
C
A
T
A
C
Compared to the parent’s DNA sequence, identify the snail offspring that has a substitution mutation in the corkscrew shell gene.
(1 point)
Responses
Offspring #4
Offspring #4
Offspring #3
Offspring #3
Offspring #1
Offspring #1
Offspring #2
Offspring #2
Remaining Attempts : 1View previous attempt
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Answers
GPT-4o mini
To identify the snail offspring that has a substitution mutation in the corkscrew shell gene, we need to compare the DNA sequences from the parent and each of the offspring.
The parent’s DNA sequence is:
```
A A T G C G T A T G T T A C G C A T A C
```
Now, let's look at the offspring sequences:
- **Offspring #1**:
```
A A T T C G T A T G T T A A G C A T A C
```
(Difference: 4th base - G to T)
- **Offspring #2**:
```
A A T C G T A T G T T A G C A T A C
```
(Difference: 4th base - G to C)
- **Offspring #3**:
```
A A T G C G T A T G G T T A C G C A T A C
```
(Difference: 10th base - T to G)
- **Offspring #4**:
```
A A T G C G T A T G T T A C G C A T A C
```
(No differences, identical to parent)
Comparing each sequence, we see that both **Offspring #1** and **Offspring #2** exhibit substitutions in the 4th position, while **Offspring #3** exhibits a substitution mutation at the 10th position. **Offspring #4** is identical to the parent.
Thus, the offspring that has a substitution mutation in the corkscrew shell gene could refer to any of **Offspring #1**, **Offspring #2**, or **Offspring #3**, depending on whether they're looking for a substitution specifically in terms of base pairs.
However, if the question narrowly asks for *one* specific offspring with a substitution mutation, then the **best answer would be Offspring #1 or Offspring #2**, as both show a substitution compared to the parent's sequence.
Final answer choice based on the possible choices given would be:
- **Offspring #1** (A substitution of 'G' to 'T')
However, you could argue the validity of either; thus, you may need the context provided in the question or assumptions you're making based on preferred mutations.
The parent’s DNA sequence is:
```
A A T G C G T A T G T T A C G C A T A C
```
Now, let's look at the offspring sequences:
- **Offspring #1**:
```
A A T T C G T A T G T T A A G C A T A C
```
(Difference: 4th base - G to T)
- **Offspring #2**:
```
A A T C G T A T G T T A G C A T A C
```
(Difference: 4th base - G to C)
- **Offspring #3**:
```
A A T G C G T A T G G T T A C G C A T A C
```
(Difference: 10th base - T to G)
- **Offspring #4**:
```
A A T G C G T A T G T T A C G C A T A C
```
(No differences, identical to parent)
Comparing each sequence, we see that both **Offspring #1** and **Offspring #2** exhibit substitutions in the 4th position, while **Offspring #3** exhibits a substitution mutation at the 10th position. **Offspring #4** is identical to the parent.
Thus, the offspring that has a substitution mutation in the corkscrew shell gene could refer to any of **Offspring #1**, **Offspring #2**, or **Offspring #3**, depending on whether they're looking for a substitution specifically in terms of base pairs.
However, if the question narrowly asks for *one* specific offspring with a substitution mutation, then the **best answer would be Offspring #1 or Offspring #2**, as both show a substitution compared to the parent's sequence.
Final answer choice based on the possible choices given would be:
- **Offspring #1** (A substitution of 'G' to 'T')
However, you could argue the validity of either; thus, you may need the context provided in the question or assumptions you're making based on preferred mutations.