12. when plants are designed to contain more sets of chromosomes than normal, which of the following have humans taken advantage of?
a. inbreeding
b. selective breeding c. hybridization
d. polyploidy

Error analysis: what might be the reason that some of your percentages didn't exactly match your predicted results? gametes aren't responsible for inheritance. mice don't have large litters, so the sample size was not large enough. the wrong type of mice were used.