Science Assessment ~ Items ~ RH036003

Which of the following statements is TRUE about the DNA molecules in the cells of the leaves and the cells of the flowers of the same plant?

The DNA molecules in the cells of the plant’s leaves and in the cells of its flowers are the same.
The DNA molecules in the cells of the plant’s leaves and in the cells of its flowers are different.
There are DNA molecules in the cells of the plant’s leaves, but there are no DNA molecules in the cells of its flowers.
Neither the cells of the plant’s leaves nor the cells of its flowers contain DNA molecules.

Group	Correct	Total	Percent
Overall	846	2539	33%
Grades
6–8	451	1558	29%
9–12	395	978	40%
Gender
Male	404	1223	33%
Female	424	1274	33%
Primary Language
English	755	2244	34%
Other	68	224	30%

Disciplinary Core Ideas: LS3.A Each chromosome consists of a single very long DNA molecule, and each gene on the chromosome is a particular segment of that DNA. The instructions for forming species' characteristics are carried in DNA. All cells in an organism have the same genetic content, but the genes used (expressed) by the cell may be regulated in different ways. Not all DNA codes for a protein; some segments of DNA are involved in regulatory or structural functions, and some have no as-yet known function.

Science Assessment