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Punnett Square Practice Problems
4
2
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A plant species has two alleles for seed shape: Flat (F) and round (f). The Flat (F) allele exhibits incomplete dominance. The intermediate phenotype is curved seeds.
Based on the following Punnett Square, what is the probability that an offspring will have flat seeds?
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Given your answer to the nearest percentage.
%
HINT
Each genotype shown in the Punnett Square has a 25% chance of occuring. If the same genotype appears in more than one square, the probabilites are added:
1 square = 25% probability
2 squares = 50% probability
3 squares = 75% probability
If the same genetype appears in all 4 boxes, 100% of the offspring will have that genotype.
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