Item RH054001: If the sex cells of a mouse contain 20 chromosomes, then the fertilized egg of a mouse must contain 40 chromosomes.

Sex cells (sperm or egg cells) in mice contain 20 chromosomes. How many chromosomes does the fertilized egg cell of a mouse contain?

  1. 10
  2. 20
  3. 40
  4. 80
Distribution of Responses
Chart showing distrubtion of responses for Item RH054001
Students Responding Correctly
Group Correct Total Percent
Overall 2097 4516 46%
Grades
  6–8 1163 2596 45%
  9–12 932 1917 49%
Gender
  Male1026221546%
  Female1031222546%
Primary Language
  English1899406747%
  Other14133942%

View data table