Question

When a cross is made between a tall plant with yellow seed (TtYy) and a tall plant with green seed (Ttyy), in what proportion of the following phenotypes could be expected?

Hint:

Use the forked line method or Punnett square to determine phenotype ratios.

Answer 1

Given cross: TtYy × Ttyy

Phenotypes:

1. Tall and green: T-Yy, T-yy
   Calculation: (3/4) × (1/2) = 3/8
2. Dwarf and green: ttYy, ttyy
   Calculation: (1/4) × (1/2) = 1/8