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 polydactylousa. Bill is color blind and polydactylous. His mother has normal vision and normal fingers and toes. If Bill and Martha marry, what types and proportions of children can they produce?

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