General Science • BiologyHard
In Mendelian genetics, what phenotypic ratio is typically observed in the F2 generation of a classic dihybrid cross involving two independent traits?
A. Three is to one
B. One is to two is to one
C. Nine is to three is to three is to one✓ Correct Answer
D. Thirteen is to three
💡 Solution & Explanation
Gregor Mendel observed a phenotypic ratio of nine is to three is to three is to one in the second filial generation when studying dihybrid crosses involving two pairs of contrasting traits, demonstrating the principle of independent assortment. The monohybrid cross phenotypic ratio is three to one, and the genotypic ratio is one to two to one. Independent assortment states that alleles of different genes segregate independently of one another during gamete formation.
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