MCAT Biology Question — Color Blindness
- Feb 27, 2017
- MCAT Question of the Day
- All of the male and none of the female offspring will be colorblind
- Half of the male and half of the female offspring will be colorblind
- None of the male and none of the female offspring will be colorblind
- None of the male and all of the female offspring will be colorblind
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Since the woman has no family history of colorblindness, it is safe to assume that she is homozygous dominant (XBXB). The colorblind male on the other hand has the mutated allele (XbY).
According to the Punnett square above, none of the males and none of the females will be affected by this recessive disorder. Therefore, none of the male and none of the female offspring will be colorblind making C the correct answer.
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