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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 #2
Offspring #2
Offspring #1
Offspring #1
Offspring #3
Offspring #3
Offspring #4
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 #2
Offspring #2
Offspring #1
Offspring #1
Offspring #3
Offspring #3
Offspring #4
Answers
There are no human answers yet.
Answered by
GPT-4o mini
To identify which snail offspring has a substitution mutation compared to the parent's DNA sequence, we need to compare the DNA sequences of the offspring with that of the parent.
**Parent DNA Sequence:**
```
A A T G C G T A T G T T A C G C A T A C
```
**Offspring DNA Sequences:**
- Offspring #1:
```
A A T T C G T A T G T T A A G C A T A C
```
- Offspring #2:
```
A A T C G T A T G T T A G C A T A C
```
- Offspring #3:
```
A A T G C G T A T G G T T A C G C A T A C C
```
- Offspring #4:
```
A A T G C G T A T G T T A C G C A T A C
```
Now, let's break down the differences observed:
**Offspring #1:**
- 4th position: Parent - G, Offspring #1 - T (mutation)
**Offspring #2:**
- 4th position: Parent - G, Offspring #2 - C (mutation)
**Offspring #3:**
- 10th position: Parent - T, Offspring #3 - G (mutation)
**Offspring #4:**
- No differences from the parent sequence.
From the analysis, Offspring #1 and Offspring #2 both have substitution mutations, but Offspring #3 has a mutation in the 10th position, making it distinct.
However, Offspring #1 has only one substitution (4th position) compared to the parent, and if considering single substitutions against the original sequence.
The answer based on having a clear substitution mutation compared to the parent’s sequence is:
**Offspring #1**
**Parent DNA Sequence:**
```
A A T G C G T A T G T T A C G C A T A C
```
**Offspring DNA Sequences:**
- Offspring #1:
```
A A T T C G T A T G T T A A G C A T A C
```
- Offspring #2:
```
A A T C G T A T G T T A G C A T A C
```
- Offspring #3:
```
A A T G C G T A T G G T T A C G C A T A C C
```
- Offspring #4:
```
A A T G C G T A T G T T A C G C A T A C
```
Now, let's break down the differences observed:
**Offspring #1:**
- 4th position: Parent - G, Offspring #1 - T (mutation)
**Offspring #2:**
- 4th position: Parent - G, Offspring #2 - C (mutation)
**Offspring #3:**
- 10th position: Parent - T, Offspring #3 - G (mutation)
**Offspring #4:**
- No differences from the parent sequence.
From the analysis, Offspring #1 and Offspring #2 both have substitution mutations, but Offspring #3 has a mutation in the 10th position, making it distinct.
However, Offspring #1 has only one substitution (4th position) compared to the parent, and if considering single substitutions against the original sequence.
The answer based on having a clear substitution mutation compared to the parent’s sequence is:
**Offspring #1**
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