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?

  1. 10
  2. 20
  3. 40
  4. 80
Distribution of Responses
Chart showing distrubtion of responses for Item RH033002
Students Responding Correctly
Group Correct Total Percent
Overall 1505 2726 55%
Grades
  6–8 762 1509 50%
  9–12 743 1214 61%
Gender
  Male696130054%
  Female778136857%
Primary Language
  English1355241156%
  Other10724244%

View data table