T. Trimpe 2008 http://sciencespot.net/

1. Predict the offspring from a cross between a purebred pea plant with purple flowers and a pea plant with white flowers. Use P for purple and p for white.
(a) Give the genotypes. Purebred Purple = ____ White = ____
(b) Create a Punnett square to determine the genotypes for the offspring.
(c) What is the probability that a plant would have purple flowers? _______ %
(d) What is the probability that a plant would have white flowers? _______ %
2. If you crossed two hybrid plants with purple flowers and planted 200 of the seeds, how many would you expect to have with white flowers. Create a
Punnett square to support your answer.

1. Predict the offspring from a cross between a purebred pea plant with purple flowers and a pea plant with white flowers. Use P for purple and p for white.
(b) Create a Punnett square to determine the genotypes for the offspring.
p p
P
P
Pp Pp
Pp Pp
(c) What is the probability that a plant would have purple flowers? 100%
(d) What is the probability that a plant would have white flowers? 0%

2. If you crossed two hybrid plants with purple flowers and planted 200 of the seeds, how many would you expect to have with white flowers. Create a
Punnett square to support your answer.

2. If you crossed two hybrid plants with purple flowers and planted 200 of the seeds, how many would you expect to have with white flowers. Create a
Punnett square to support your answer.
P p
P p
PP Pp
Pp pp
You would expect to see white flowers on 25% of the plants, which would be
50 plants.