Question 24 • Fall 24 GSE Biology B-IC
The white-flower phenotype represents the homozygous recessive genotype, so its expected proportion is q². The table gives 411 white plants out of 1,000, so q² = 0.411 and q is about 0.641. Since p + q = 1, p is about 1 − 0.641 = 0.359—however, the question states q² = 0.169, which gives q = 0.411 and p = 0.589. Thus, the expected p value is 0.589, choice D.
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