3.    Pea seeds can be round (R: dominant) or wrinkled (r: recessive). In a field of wild peas ninety-six percent (96%) of the peas are round.  What is the allelic frequencies?

A. If 96% have the dominant trait, then 4% have the recessive trait.
    q2 = 0.04  therefore the recessive allelic frequency is q = 0.2

B. p + q = 1
    p = 1 - 0.2
    p = 0.8 - dominant allelic frequency

C.
Genotype Designation  Frequency Percent
Homozygous Dominant pp or p2 (0.8)2 = 0.64 64%
Heterozygote pq  2(0.8)(0.2) = 0.49 32%
Homozygous Recessive qq (0.2)2 = 0.04 4%
The dominant allelic frequency is 0.8 and the recessive allelic frequency is 0.2.

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