If the frequency of a dominant phenotype in a stable population in 75% the frequency of the dominant allele in that population is____________________?
Correct answer: A. 50%
- A. 50%
- B. 75%
- C. 25%
- D. 40$
Explanation
If the dominant phenotype is 75%, the recessive phenotype is 25%, so under Hardy-Weinberg equilibrium q² = 0.25, giving q = 0.5 and p = 0.5. Thus the dominant allele frequency is 50%.
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