Original Project
Reproduction, Genes, and Heredity
Genetic information in the form of DNA molecules is transferred from parents to offspring during reproduction.
Item RH033002: If the skin cells of a mouse each contain 40 chromosomes, the sperm cells of a mouse contain 20 chromosomes.
Like most animals, mice reproduce sexually. The skin cells of a mouse each contain 40 chromosomes. How many chromosomes does a sperm cell of a male mouse contain?
- 10
- 20
- 40
- 80
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 2726 |
6–8 n = 1509 |
9–12 n = 1214 |
Male n = 1300 |
Female n = 1368 |
English n = 2411 |
Other n = 242 |
|
| A. | 10% | 11% | 8% | 12% | 8% | 9% | 14% |
| B. | 55% | 50% | 61% | 54% | 57% | 56% | 44% |
| C. | 20% | 20% | 19% | 20% | 19% | 19% | 26% |
| D. | 16% | 19% | 11% | 15% | 16% | 16% | 16% |