Which of the following genotype(s) must a female child have in order to be color blind?  XNXN               XNXn               XnXn               XNY                 XnY (XN represents the normal color vision allele. Xn represents the color-blindness allele. Y represents the Y chromosome, which does not carry the color-vision gene.)   Which of the following genotype(s) must a color-blind male have? Explain your rationale. XNXN               XNXn               XnXn               XNY                 XnY (XN represents the normal color vision allele. Xn represents the color-blindness allele. Y represents the Y chromosome, which does not carry the color-vision gene.)

Human Biology (MindTap Course List)
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Chapter19: Introduction To Genetics
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Problem 4CT: The young woman shown at right has albinismvery pale skin, white hair, and pale blue eyes. This...
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Which of the following genotype(s) must a female child have in order to be color blind? 

XNXN               XNXn               XnXn               XNY                 XnY

(XN represents the normal color vision allele. Xn represents the color-blindness allele. Y represents the Y chromosome, which does not carry the color-vision gene.)

 

Which of the following genotype(s) must a color-blind male have? Explain your rationale.

XNXN               XNXn               XnXn               XNY                 XnY

(XN represents the normal color vision allele. Xn represents the color-blindness allele. Y represents the Y chromosome, which does not carry the color-vision gene.)

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Colorblindness is a X-linked recessive disorder which doesn't allow the individual to differentiate between certain colors like green, blues and reds.

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