Question: If individuals of a population of Drosophila melanogaster have an average of 114.3 bristles and t…

If individuals of a population of Drosophila
melanogaster have an average of 114.3 bristles and the
heritability of bristle number is 0.384, what is the expected mean
bristle number after one generation of selection with a selection
differential of four more bristles? What is the expected number
after ten generations of equally intense pressure?