Based on this information, what is Josiah's phenotype for the sickle-cell disease trait?

 - Aa
 - not having sickle-cell disease
An organism's phenotype for a trait is its observable version of that trait. Josiah's observable version of the sickle-cell disease trait is not having sickle-cell disease. So, Josiah's phenotype for the sickle-cell disease trait is not having sickle-cell disease.