If an X- linked recessive trait has a frequency of 5% in males, what percentage of females are carriers? (Assume that the population is in Hardy- Weinberg equilibrium.)

Mexican hairless dogs are heterozygous (Hh), carrying a single copy of the lethal allele. In a given population, the Hh genotypic frequency is 60% and the frequency of each homozygote is 20%. Assuming w = 1 for the Hh and hh dogs, what is the estimated genotypic frequency of the lethal HH genotype after reproduction?

Given the following genetic profile, what is the mean fitness of the population? $$\begin{array} { l l l l } \text { Genotype } & A 1 A 1 & A 1 A 2 & A 2 A 2 \\\text { Frequency } & 0.55 & 0.20 & 0.25 \\\text { Number } & 2750 & 1000 & 1250 \\\text { Relative fitness } ( w ) & 1.0 & 0.75 & 0.50\end{array}$$