If you know the phenotypes of each family member, can you use this chart to figure out their probable genotypes?

Phenotypes:

Mother and father were both black Rose Comb Bantams. They had four children, three black-feathered chicks and one white-feathered chick.

Remember, the gene for black feathers(N) is completely dominant over the gene for white feathers (n). (A dominant gene is represented by a capital letter; a recessive gene is represented by a lower case letter.)