Chapter 11, Problem 39P

Thinking back to the discussion of gain $\text{-}$ of $\text{-}$ function and loss $\text{-}$ of $\text{-}$ function mutation in Section $\text{4}\text{.1}$, and putting those concepts together with the discussion of base substitution mutation in this chapter, explain why gain $\text{-}$ of $\text{-}$ function mutation are often dominant and why a loss $\text{-}$ of $\text{-}$ function mutation are often recessive. Give an example of a type of gain $\text{-}$ of $\text{-}$ function mutation that is dominant and of a loss $\text{-}$ of $\text{-}$ function mutation that is recessive.