Phenotypes in mice...?

Question

In mice, the allele for black fur (B) is dominant over the allele for brown fur (b)

What would be the expected ratios of offspring phenotypes from matings between a brown mouse and a heterozygous black one?

Answer 1

black parent Bb  brown parent bb

gametes  B, b        b

offspring Bb or bb ratio 1:1 black to brown

Answer 2

Bb x bb

gives Bb(Black) & bb (Brown) in the offspring in the ratio 1:1