1. T. Trimpe 2008 http://sciencespot.net/
Punnett Practice #2
T. Trimpe

2. 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.

3. 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? PP pp p P Pp
100% 0%

4. 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
You would expect to see white flowers on 25% of the plants, which would be 50 plants.