Which of the following phenotypes is possible in the F2 generation resulting from a dihybrid cross between a tall plant with round seeds and a short plant with wrinkled seeds?

i. Tall plant with wrinkled seeds.

ii. Short plant with round seed.

iii. Tall plant with round seeds.

A dihybrid cross involves a cross between two individuals differing in two pairs of contrasting traits. A cross between a homozygous dominant plant (TTRR) and a homozygous recessive plant (ttrr) results in all heterozygous F1 progeny (TtRr) with round and tall phenotypes. When these heterozygous plants are crossed, they will produce 4 phenotypic ratios in the F2 generation: 9/16 round and tall, 3/16 round and short, 3/16 wrinkled and tall, and 1/16 wrinkled and short.

Therefore, i, ii, and iii are all possible phenotypes in the F2 generation.