Evolution
Evolution and Natural Selection
Genetic variation results from mutations and allele shuffling during reproduction, which leads to variation in p…
Item EH008001: Mutations can occur at any time.
When can mutations occur?
- Mutations can occur at any time.
- Mutations can occur only when the environment is changing.
- Mutations can occur only when the environment is not changing.
- Mutations can occur only when an individual needs a mutation to survive.
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. | Mutations can occur at any time. | 49% | 39% | 49% | 48% | 50% | 49% | 44% |
| B. | Mutations can occur only when the environment is changing. | 29% | 33% | 28% | 29% | 29% | 28% | 44% |
| C. | Mutations can occur only when the environment is not changing. | 3% | 0% | 3% | 3% | 3% | 3% | 0% |
| D. | Mutations can occur only when an individual needs a mutation to survive. | 19% | 28% | 19% | 20% | 18% | 20% | 11% |
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. | Mutations can occur at any time. | 68% | 71% | 68% | 68% | 67% | 69% | 44% |
| B. | Mutations can occur only when the environment is changing. | 14% | 29% | 14% | 15% | 13% | 15% | 11% |
| C. | Mutations can occur only when the environment is not changing. | 3% | 0% | 2% | 3% | 2% | 2% | 22% |
| D. | Mutations can occur only when an individual needs a mutation to survive. | 16% | 0% | 16% | 13% | 18% | 15% | 22% |
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. | Mutations can occur at any time. | 87% | 75% | 87% | 84% | 89% | 86% | 80% |
| B. | Mutations can occur only when the environment is changing. | 8% | 25% | 8% | 8% | 8% | 8% | 20% |
| C. | Mutations can occur only when the environment is not changing. | 1% | 0% | 2% | 2% | 1% | 2% | 0% |
| D. | Mutations can occur only when an individual needs a mutation to survive. | 4% | 0% | 4% | 5% | 2% | 4% | 0% |