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If 40% of students in a class have dimples, and 50% of these students have the...

If 40% of students in a class have dimples, and 50% of these students have the genotype DD, what are the phenotypic and genotypic frequencies for dimples in the class?

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Answer #1

I have answered the question in the image below using the Hardy Weinberg equation and Mendel's law of inheritance. Dominant allele in the class is 0.3 or 30 percent and recessive allele in the class is 0.7 or 70 percent and 60 percent in the class do not have dimples whereas 40 percent do have dimples (0.2 or 20 percent are heterozygous for the trait)  

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