Evolution
Evolution and Natural Selection
Genetic variation results from mutations and allele shuffling during reproduction, which leads to variation in p…
Item EH017002: Two alleles of the same gene have some nucleotides in common in their DNA sequences and some that are different.
Which of the following correctly describes the relationship between two different alleles of the same gene and the DNA sequences of those alleles?
- Two alleles of the same gene are completely different. Their DNA sequences do not have any nucleotides in common.
- Two alleles of the same gene have some nucleotides in common in their DNA sequences and some that are different.
- Two alleles of the same gene are identical. All of their nucleotides are the same and they are in the same order.
- There is no relationship between nucleotides and alleles. Nucleotides make up a gene, not an allele.
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 572 |
6–8 n = 18 |
9–12 n = 502 |
Male n = 245 |
Female n = 283 |
English n = 511 |
Other n = 18 |
||
| A. | Two alleles of the same gene are completely different. Their DNA sequences do not have any nucleotides in common. | 13% | 22% | 12% | 13% | 13% | 13% | 6% |
| B. | Two alleles of the same gene have some nucleotides in common in their DNA sequences and some that are different. | 52% | 50% | 53% | 52% | 53% | 52% | 44% |
| C. | Two alleles of the same gene are identical. All of their nucleotides are the same and they are in the same order. | 23% | 11% | 24% | 25% | 22% | 23% | 28% |
| D. | There is no relationship between nucleotides and alleles. Nucleotides make up a gene, not an allele. | 12% | 17% | 12% | 10% | 12% | 12% | 22% |
Post-Test (Control)
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 274 |
6–8 n = 14 |
9–12 n = 230 |
Male n = 119 |
Female n = 130 |
English n = 237 |
Other n = 9 |
||
| A. | Two alleles of the same gene are completely different. Their DNA sequences do not have any nucleotides in common. | 12% | 36% | 11% | 12% | 13% | 12% | 33% |
| B. | Two alleles of the same gene have some nucleotides in common in their DNA sequences and some that are different. | 55% | 50% | 55% | 53% | 57% | 55% | 44% |
| C. | Two alleles of the same gene are identical. All of their nucleotides are the same and they are in the same order. | 22% | 14% | 23% | 25% | 21% | 23% | 22% |
| D. | There is no relationship between nucleotides and alleles. Nucleotides make up a gene, not an allele. | 11% | 0% | 10% | 10% | 9% | 10% | 0% |
Post-Test (Treatment)
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 278 |
6–8 n = 4 |
9–12 n = 248 |
Male n = 130 |
Female n = 131 |
English n = 251 |
Other n = 5 |
||
| A. | Two alleles of the same gene are completely different. Their DNA sequences do not have any nucleotides in common. | 10% | 25% | 9% | 12% | 8% | 9% | 40% |
| B. | Two alleles of the same gene have some nucleotides in common in their DNA sequences and some that are different. | 69% | 25% | 71% | 66% | 71% | 70% | 60% |
| C. | Two alleles of the same gene are identical. All of their nucleotides are the same and they are in the same order. | 14% | 50% | 14% | 16% | 13% | 15% | 0% |
| D. | There is no relationship between nucleotides and alleles. Nucleotides make up a gene, not an allele. | 6% | 0% | 6% | 6% | 8% | 6% | 0% |