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?

  1. One type
  2. Two types
  3. Four types
  4. Twenty types

Distribution of Responses

Chart showing distrubtion of responses for Item RH002003

Percent of students responding correctly

Overall45%
Grades 6–840%
Grades 9–1252%
Male43%
Female48%
Primary Language is English46%
Primary Language is not English39%

View data table