First, we establish the phenotypes of the parents:
Male HHBb x HhBb Female
Genotypic ratios 2:4:2:2:4:2
- HHBB: 2 (12.5%)
- HHBb: 4 (25%)
- HHbb: 2 (12.5%)
- HhBB: 2 (12.5%)
- HhBb: 4 (25%)
- Hhbb: 2 (12.5%)
Hh/HH: Long hair
BB/Bb: Black fur
bb: Gray fur
Phenotypic ratios: 12:4
- Long hair/Black fur (HHBB, HHBb, HhBB, HhBb): 12 (75%)
- Long hair/Gray fur (HHbb, Hhbb): 4 (25%)