Some fruit flies are born with curly wings which makes them unable to fly. it has been shown that curly wings are caused by a dominant gene which can be represented by the symbol w, while the recessive normal wing gene is represented by the symbol w. if a parent fly with the genotype ww is crossed with a parent of the genotype ww, what percentage the offspring will have curly wings?
a) 100%
b) 75%
c) 50%

d) 25%