Question

In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a brown cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?
0 BB: 2 Bb: 2 bb






1 BB: 2 Bb: 1 bb






2 BB: 0 Bb: 2 bb






2 BB: 1 Bb: 0 b

Answer 1

The first one .....  0 BB: 2 Bb: 2 bb  use punnett squares it helps, just search how to use them.