1.
a. Bb
b. bb
c. Gray, because the male is homozygous recessive, which indicates the recessive trait is black.
d. Gray-Female, Black-Male
e. B b
b Bb bb
b Bb bb
f. There's a 50% chance the babies will be heterozygous (for gray) and there's a 50% chance the babies will be homozygous recessive for black.
g. There's a chance that all four offspring won't adhere exactly to the ratios predicted by the Punnett Squares, because male offspring can only have one trait (on the X).
Hope this helps. I hope you understand that heterozygous is (Big Letter & Small letter) and homozygous is either: Big Letter Big Letter OR Small Letter Small Letter. Have a great night and I hope you are successful in your class!