A Color- Blind Woman Marries a Man Who Is Not

question 16

Multiple Choice

A color- blind woman marries a man who is not color- blind.All of their sons,but none of their daughters,are color- blind.Which of the following statements correctly explains these results?

• A)The gene for color vision is found on the Y chromosome.
• B)The gene for color vision is found on the X chromosome.
• C)The gene for color vision is codominant with the gene for sex determination.
• D)The gene for color vision is incompletely dominant to the gene for sex determination.

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