Red–green color blindness is an X-linked recessive
trait in humans. Polydactyly (extra fingers and toes) is an
autosomal dominant trait. Martha has normal fingers and toes and
normal color vision. Her mother is normal in all respects, but her
father is color blind and polydactylous. Bill is color blind and
polydactylous. His mother has normal color vision and normal
fingers and toes. If Bill and Martha marry, what types and
proportions of children can they produce?