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Consider the allelic frequency of the alleles of the bigmouth gene in a population of 10 people. In this population, 2 have the genotype B8, 3 have the genotype bb, and the rest are heterozygotes. What is the frequency q of the recessive allele b?
A. q 0.55
B. q 0.50
C. q 0.45
D. q 0.2
E. The allele frequencies can only be determined if the population is in Hardy-Weinberg equilibrium

Respuesta :

Answer:

A. q 0.55

Explanation:

Frequency of genotye "BB" [tex]= \frac{2}{10}[/tex][tex]=0.2[/tex]

Frequency of genotye "bb" [tex]= \frac{3}{10}[/tex][tex]=0.3[/tex]

Frequency of genotye "Bb" [tex]= \frac{10-(2+3)}{10}[/tex][tex]=0.5[/tex]

Frequency of bb is represented as "[tex]q^{2}[/tex]" as per  Hardy Weinberg's principle.

Thus, frequency q of the recessive allele b is represented by

[tex]q= \sqrt{q^{2} } \\q = \sqrt{0.3} \\q = 0.547\\q=0.55[/tex]

Hence, option A is correct.

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