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Red-green color blindness in humans is a sex-linked trait, wit
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Red-green color blindness in humans is a sex-linked trait, with the recessive allele for color blindness located on the X-chromosome. If a man with color blindness has a father and a brother that are not color blind, then what would his mother's genotype be? A. XY (hemizygous dominant) B. XX (homozygous dominant) C. XY (hemizygous recessive) D. Xb Xb (homozygous recessive) E. XX (heterozygous)

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Red-green color blindness in humans is a sex-linked trait, with the recessive allele for color blindness located on the X-chromosome. If a man with color blindness has a father and a brother that are not color blind, then what would his mother's genotype be? A. XY (hemizygous dominant) B. XX (homozygous dominant) C. XY (hemizygous recessive) D. Xb Xb (homozygous recessive) E. XX (heterozygous)
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Question Text
Red-green color blindness in humans is a sex-linked trait, with the recessive allele for color blindness located on the X-chromosome. If a man with color blindness has a father and a brother that are not color blind, then what would his mother's genotype be? A. XY (hemizygous dominant) B. XX (homozygous dominant) C. XY (hemizygous recessive) D. Xb Xb (homozygous recessive) E. XX (heterozygous)
TopicAll topics
SubjectBiology
ClassClass 12