The Table Below Shows Narrow-Sense Heritability Estimates for Body Weight $$\begin{array} { l l } \text { Trait } & h ^ { 2 } \\\hline\text { Body weight } & 0.5 \\\text { Egg production } & 0.2\end{array}$$

Essay

The table below shows narrow-sense heritability estimates for body weight and egg production in chickens. $$\begin{array} { l l } \text { Trait } & h ^ { 2 } \\\hline\text { Body weight } & 0.5 \\\text { Egg production } & 0.2\end{array}$$ a. Which chicken trait would respond best to selection? Explain your answer.
b. Explain the expected gain if high-egg-producing chickens are selectively bred.
c. Explain how and why the h² would change over generations of selective breeding for high egg production.