Answer:
Frequency of affected males: 30%
Carriers are represented by heterozygous females: 42%
Explanation:
According to the Hardy–Weinberg principle:
1 = q2 + 2pq + p2
1 = q + p
p2 = 0.09 >> p = 0.3
Males have only one X chromosome, thereby the frequency of affected males is the allele frequency >> 0.3 (30%)
q = p - 1= 0.7
Carriers are females that are heterozygous >>
2 pq = 2 x 0.3 x 0.7 = 0.42 >>> 42%
