6.Evolution
medium

In a certain population, the frequency of three genotypes is as follows

Genotypes : $BB$ $Bb$ $bb$
frequency : $22\%$ $62\%$ $16\%$

What is the likely frequency of $B$ and $b$ alleles ?

Solution

Frequency of $\mathrm{B}$ allele $=$ all of $\mathrm{BB}(100 \%)+1 / 2$ of $\mathrm{Bb}(50 \%)=22+31=53 \%$

$\Rightarrow$ Frequency of $b$ allele $=$ all of $b b(100 \%)+1 / 2$ of $B b(50 \%)=16+31=47 \%$

Std 12
Biology

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