Original Project
Reproduction, Genes, and Heredity
Every body cell of an individual organism (with a few exceptions) contains an identical set of DNA molecules an…
Item RH035003: A new skin cell of a cow contains the same number of DNA molecules as the existing skin cells.
A skin cell from a cow contains 60 DNA molecules. How many DNA molecules are found in new skin cells that develop as the cow grows?
- 30
- 60
- 90
- 120
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 2547 |
6–8 n = 1564 |
9–12 n = 980 |
Male n = 1228 |
Female n = 1276 |
English n = 2250 |
Other n = 225 |
|
| A. | 23% | 26% | 20% | 23% | 24% | 23% | 27% |
| B. | 42% | 31% | 58% | 41% | 42% | 43% | 31% |
| C. | 14% | 17% | 9% | 14% | 14% | 13% | 20% |
| D. | 21% | 26% | 13% | 22% | 20% | 21% | 22% |