Red-Green Colorblindness Is a Recessive X-Linked Trait

question 61

Multiple Choice

Red-green colorblindness is a recessive X-linked trait.If a female is red-green colorblind,which of the following is TRUE?

• A) Her mother must be colorblind.
• B) Both her parents must be colorblind.
• C) Both her parents are carriers of the recessive allele.
• D) Her father must be colorblind.
• E) Women cannot exhibit red-green colorblindness because they have two X chromosomes.

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