Chaunie - Ww - heterozygous for granting wishes
Patches - ww - homozygous for cannot grant wishes
The cross between Ww x ww will have the following genotypes:
Ww - 50%
ww - 50 %
The cross between Ww x ww will have the following phenotypes:
Ww - heterozygous for granting wishes - 50 %
ww - homozygous recessive for cannot grant wishes - 50 %