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
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 1610 |
6–8 n = 923 |
9–12 n = 687 |
Male n = 813 |
Female n = 774 |
English n = 1433 |
Other n = 128 |
|
| A. | 11% | 11% | 10% | 14% | 7% | 10% | 14% |
| B. | 31% | 32% | 29% | 28% | 34% | 31% | 32% |
| C. | 45% | 40% | 52% | 43% | 48% | 46% | 39% |
| D. | 13% | 17% | 9% | 15% | 11% | 13% | 15% |