Consider two genes that are independent, the a gene and the b gene. each gene has two alleles (a gene: a1 and a2, b gene: b1 and b2). the frequency of a1 allele at the a gene is 0.29 and the frequency of the b2 allele at the b gene is 0.42. what is the probability of an individual in a randomly mating population of having a1a2b1b2 as their genotype?