A recessive allele (wg) of a gene in fruit flies causes the flies to lack wings. The dominant allele Wg gives wings A second gene on another chromosome the recessive allele (rsd) causes wings to be raised up while the dominant allele (Rsd) causes the wings to be held to the side of the body. A fly that is Wg/wg; Rsd/rsd has offspring with one which is wg/wg; rsd/rsd. What is the chance that an offspring has raised wings?
a) 1/4
b) 3/8
c) 0
d) 1/2
e) 1/8