Assuming that there are only two alleles at a given locus, if the frequency of one allele is 0.6, what is the frequency of the other allele?
a. -0.6.
b. 0
c. 0.4
d. 0.6
e. 1

c. 0.4

Explanation:

A gene may have two or more alleles. Irrespective of the total number of alleles, the sum total of frequencies of all the possible alleles for a gene present in the population is always 1. If a gene has two alleles and the frequency of one allele of the gene in a population is p and that of another allele is q, their total frequency would be one.  

So, if the frequency of one allele is= 0.6

Frequency of another allele would be= 1-0.6= 0.4

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