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

Question

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}