In narwhals, smooth horns are recessive to spiraled horns. Color is a sex-linked and
incompletely dominant trait. Narwhals can be black, white, or silver.

Show the cross between a white male who is heterozygous spiral horned and a silver female who is heterozygous spiral horned.

List ALL the possible phenotypes of their offspring and the phenotypic ratio. Can they have a calf who is a black female with a smooth horn? Is it possible for them to have a calf who is a silver male? Why or why not?