Population x is four times larger than population y and

Question

1. Population X is FOUR times larger than population Y, and both populations are in Hardy-Weinberg equilibrium. In population X, the incidence of an autosomal recessive disease is 25%. In population Y, the incidence of the same disease is 4%. These two populations are merged and one generation of random mating takes place. What is the incidence of the disease in the new population?

2. In a large, randomly mating population, the frequency of the allele (Hb^S) for sickle-cell hemoglobin is 0.03. The results of studies have shown that people with the following genotypes produce the average numbers of offspring given:

Genotype    Average number of offspring produced
Hb^A Hb^A          7
Hb^A Hb^S          8
Hb^S Hb^S           0

What will the frequency of the sickle-cell allele (Hbs) be in the next generation?