Question

A phenotype ratio of 9:3:3:1 in the offspring of a mating of two organisms heterozygous

for two traits is expected when:
A. the genes reside on the same chromosome
B. each gene contains two mutations
C. the gene pairs assort independently during meiosis
D. only recessive traits are scored
E. none of the above

Answer 1

C. the gene pairs assort independently during meiosis.