To determine the percentage of white moths in the natural population in 1962, we need more information about the specific allele frequencies and genotype frequencies for the G locus in the population. The Hardy-Weinberg equilibrium (HWE) provides a mathematical framework to estimate allele and genotype frequencies in a population under certain assumptions.
In the absence of more information, we cannot accurately calculate the percentage of white moths in the natural population in 1962. The percentage would depend on the allele frequencies and the inheritance pattern of the G locus.