Answer:
Frequency of the B3 allele [tex]= 0.1[/tex]
Explanation:
The allele frequencies in a given population remain constant which means that every generation will have the same gene pool across the generations. As per Hardy Weinberg’s first equilibrium equation, the sum of frequency of all the alleles at a given locus is equal to one
Thus, if "p" represents the frequency of B1 allele and "q" represents the frequency of B2 allele and "r" represents the allele for B3 allele. Then, sum or "p", "q" and "r" is equal to one.
[tex]p+q+r = 1\\[/tex]
Substituting the given values, we get -
[tex]0.5 + 0.4 + r = 1\\0.9 + r = 1\\r = 1-0.9\\r = 0.1[/tex]
