Bateson and Punnett mated purple sweetpeas with white sweetpeas.F1 hybrids were all purple in color.When the hybrids were mated a ratio of 9 purple :7 white were observed in the F2 generation.Which of the following could best explain this observation?
A) Incomplete penetrance
B) Lethal alleles
C) Epistasis
D) Codominance
E) Incomplete dominance

Question

Quizplus · Accepted Answer

The observed 9:7 ratio in the F2 generation is a classic example of epistasis, where the interaction between two different genes affects the phenotype, leading to a deviation from the typical Mendelian 9:3:3:1 ratio.

Bateson and Punnett Mated Purple Sweetpeas with White Sweetpeas