Original Project
Reproduction, Genes, and Heredity
Genetic information is encoded in DNA molecules.
Item RH002003: Four different types of nucleotides are used to make DNA molecules, not one, two, or twenty.
How many different types of nucleotides are used to make DNA molecules?
- One type
- Two types
- Four types
- Twenty types
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 727 | 1610 | 45% |
| Grades | |||
| 6–8 | 370 | 923 | 40% |
| 9–12 | 357 | 687 | 52% |
| Gender | |||
| Male | 350 | 813 | 43% |
| Female | 368 | 774 | 48% |
| Primary Language | |||
| English | 653 | 1433 | 46% |
| Other | 50 | 128 | 39% |