Thedreaded pathogenic bacterium J. grocious makes a toxin called BalD. There are two allelic forms of balD, with the balD-1 alle
le encoding the more potent form of the toxin, and balD-2 allele encoding the less potent form of the toxin. Every person in Champaign-Urbana is infected with one of two possible strains of J. grocious, which differ only in whether the strain carries balD-1 allele or balD-2 allele. If the allelic frequency of J. grocious strains carrying the balD-1 allele is 0.8 in Champaign (population = 80,000), and 0.6 in (Urbana = 50,000), then what is the allelic frequency of J. grocious strains carrying the less toxic balD allele within the population of the combined cities of Champaign-Urbana?
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