A typical dihybrid cross is done between a pea plant having round and yellow seeds with a pea plant having green and wrinkled seed. What is the probability of the seeds having wrinkle phenotype in the F₂ generation.

A typical dihybrid cross is done between a pea plant having round and yellow seeds with a pea plant having green and wrinkled seed. The F₂ generation will have the ratio 9 (round and yellow):3(round and green):3 (wrinkled and yellow):1(wrinkled and green). Therefore, the probability of getting wrinkled seeds is $\frac{(3+1)}{(9+3+3+1)}=\frac{4}{16}=\frac{1}{4}$