A tall, heterozygous pea plant is crossed pollinated with another tall, heterozygous pea plant use a punnett Square to determine the probability that the offspring is a tall, homozygous pea plant.

25%
75%
0%
50%

The Punnett Square for this cross is as follows:

| Tall (Hh) | Tall (Hh)
Tall (Hh) | Tall (HH) | Tall (Hh)
Tall (Hh) | Tall (Hh) | Short (hh)

From the Punnett Square, we can see that there is a 25% chance that the offspring will be a tall, homozygous pea plant (HH).