You Cross a True-Breeding Stock of Black (BB) Mice with Skinny

Multiple Choice

You cross a true-breeding stock of black (BB) mice with skinny (SS) toes to a stock of white (bb) mice with fat (ss) toes. From this, you produce an F₁ generation of black mice with skinny toes (Bb,Ss) . If the single genes responsible for coat color and toe appearance do not sort independently, then you would expect to see:

A) more than 75% of your F₂ black mice with skinny toes.
B) more than 25% of your F₂ black mice with fat toes.