Agenetic locus has two alleles. one has a frequency of 0.12; the other has a frequency of
a) 0.88
b) 0.06
c) 0.24
e) -0.12

Option A

Explanation:

As per the first equation of equilibrium of Hardy Weinberg, the sum of frequencies of alleles at the locus is equal to unity.  

Thus,  

If "p" represents the frequency of dominant allele, "q" represents the frequency of recessive allele and at equilibrium

Let us assume that value of q is given in question which is equal to

On substituting the given values in above equation we get -

Hence, option A is correct