In a population of butterflies, the texture of the wing is determined by a singl

Question

In a population of butterflies, the texture of the wing is determined by a single gene with two incompletely dominant alleles, R(wrinkled) and S (smooth). The genotype RR confers wrinkled, but fully functional, wings genotype RS confers slightly wavy, but again fully functional, wings; and genotype SS confers smooth wings. In a population of 100 butterflies, 40 have wrinkled wings, 50 have wavy wings, and 10 have smooth wings. What is the S allele frequency in this population? 0.10 0.35 0.40 0.50 0.60

Explanation / Answer

Since total population size= 100
Total number of allels= 100x2= 200
f(S)= 50 + 10 (2)/ 100x2= 50+20/ 200= 70/ 200= 0.35
Correct answer is B.

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