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The allele frequencies can be calculated as follows: Z/Z animals do have 2 Z alleles; Z/z animals do have 1 Z allele and z/z do have 0 Z alleles. Thus the frequency of the Z allele is: 0.595 + 0.5 * 0.346 = 0.768. The Z/z animals do have 1 z allele and the z/z animals do have two z alleles. Thus the frequency of the z allele is: 0,5 * 0,346 + 0,059 = 0,232. In population genetics the frequency of alleles is noted as the frequency of p and the frequency of q. In this case p = 0.768 and q is equal to 0.232. The sum of p and q is always equal to 1 (in this example: 0,768 + 0,232).