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T. Trimpe 2008 1. Predict the offspring from a cross between a purebred tall pea plant and a hybrid tall plant. Use T for tall.

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Presentation on theme: "T. Trimpe 2008 1. Predict the offspring from a cross between a purebred tall pea plant and a hybrid tall plant. Use T for tall."— Presentation transcript:

1 T. Trimpe 2008

2 1. Predict the offspring from a cross between a purebred tall pea plant and a hybrid tall plant. Use T for tall and t for short. (a) Give the genotypes. Purebred Tall = ____ Hybrid Tall = ____ (b) Create a Punnett square to determine the genotypes for the offspring. (c) What is the probability that a plant would be tall? _______ % (d) What is the probability that a plant would be short? _______ % 2. Predict the offspring from a cross between two hybrid tall pea plants. (a) Give the genotype for a hybrid tall plant. ______ (b) Create a Punnett square to determine the genotypes for the offspring. (c) What is the probability that a plant would be tall? _____ % (d) What is the probability that a plant would be short? _____ % (e) If you were to plant 100 seeds from this cross, how many would you expect to be tall?

3 1. Predict the offspring from a cross between a purebred tall pea plant and a hybrid tall plant. Use T for tall and t for short. (a) Give the genotypes. Purebred Tall = ____ Hybrid Tall = ____ (b) Create a Punnett square to determine the genotypes for the offspring. (c) What is the probability that a plant would be tall? (d) What is the probability that a plant would be short? T T Tt TTTt TTTt 0% 100% TTTt

4 2. Predict the offspring from a cross between two hybrid tall pea plants. (a) Give the genotype for a hybrid tall plant. ______ (b) Create a Punnett square to determine the genotypes for the offspring. (c) What is the probability that a plant would be tall? (d) What is the probability that a plant would be short? (e) If you were to plant 100 seeds from this cross, how many would you expect to be tall? T t Tt TTTt tt 25% 75% Tt 25% of 100 = 25 plants


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