Red-Green Color Blindness in Humans Is an X-Linked Recessive Trait

question 19

Multiple Choice

Red-green color blindness in humans is an X-linked recessive trait.What will the progeny ratios be if a carrier female is mated with a normal male?

• A)All the sons will be color blind; all the daughters will be normal.
• B)All the sons and half the daughters will be color blind.
• C)Half the sons will be color blind; all the daughters will be carriers.
• D)Half the sons will be color blind; half the daughters will be carriers.
• E)All the sons and all the daughters will be normal.

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