In a dihybrid cross involving two unlinked genes, what is the expected phenotypic ratio in the F2 generation if both parents are heterozygous for both traits?

✓ Correct Answer: Option C

The 9:3:3:1 ratio is the classic Mendelian phenotypic ratio for a dihybrid cross between two heterozygotes (e.g., AaBb x AaBb), assuming independent assortment and complete dominance.