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Original Question
A scientist is tracking the evolution of a gene in giant African snails that determines the direction of the spiral in shells....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 #3
Offspring #3
Offspring #4
Offspring #4
Offspring #1
Offspring #1
Offspring #2
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 #3
Offspring #3
Offspring #4
Offspring #4
Offspring #1
Offspring #1
Offspring #2
Answers
There are no human answers yet.
Answered by
GPT-4o mini
To identify which offspring has a substitution mutation compared to the parent’s DNA sequence, we will compare each offspring’s sequence to the parent's sequence and look for any differences.
**Parent's DNA sequence:**
```
A A T G C G T A T G T T A C G C A T A C
```
**Offspring #1 DNA sequence:**
```
A A T T C G T A T G T T A A G C A T A C
```
*Difference at position 4: C (parent) vs T (offspring #1)*
**Offspring #2 DNA sequence:**
```
A A T C G T A T G T T A G C A T A C
```
*Difference at position 4: C (parent) vs C (offspring #2)*
**Offspring #3 DNA sequence:**
```
A A T G C G T A T G G T T A C G C A T A C C
```
*Difference at position 10: T (parent) vs G (offspring #3)*
**Offspring #4 DNA sequence:**
```
A A T G C G T A T G T T A C G C A T A C
```
*No differences from the parent’s sequence*
From the comparison, we see:
- Offspring #1 has a substitution mutation (C to T at position 4).
- Offspring #2 has no substitution.
- Offspring #3 has a substitution mutation (T to G at position 10).
- Offspring #4 has no substitution.
**Final answer:**
Offspring #1 (substitution mutation at position 4) and Offspring #3 (substitution mutation at position 10) both have mutations. However, the question can only choose one response.
Since it asks for **a substitution**, the best response would be:
**Offspring #1**
**Parent's DNA sequence:**
```
A A T G C G T A T G T T A C G C A T A C
```
**Offspring #1 DNA sequence:**
```
A A T T C G T A T G T T A A G C A T A C
```
*Difference at position 4: C (parent) vs T (offspring #1)*
**Offspring #2 DNA sequence:**
```
A A T C G T A T G T T A G C A T A C
```
*Difference at position 4: C (parent) vs C (offspring #2)*
**Offspring #3 DNA sequence:**
```
A A T G C G T A T G G T T A C G C A T A C C
```
*Difference at position 10: T (parent) vs G (offspring #3)*
**Offspring #4 DNA sequence:**
```
A A T G C G T A T G T T A C G C A T A C
```
*No differences from the parent’s sequence*
From the comparison, we see:
- Offspring #1 has a substitution mutation (C to T at position 4).
- Offspring #2 has no substitution.
- Offspring #3 has a substitution mutation (T to G at position 10).
- Offspring #4 has no substitution.
**Final answer:**
Offspring #1 (substitution mutation at position 4) and Offspring #3 (substitution mutation at position 10) both have mutations. However, the question can only choose one response.
Since it asks for **a substitution**, the best response would be:
**Offspring #1**
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