Multiple choice

A husband and wife have normal vision but fathers of both of them were colourblind. Probability of their first daughter to be colour blind is

  1. 25%

  2. 50%

  3. 75%

  4. 0%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A husband and wife have normal vision but father of both of them were colourblind. Probability of their first daughter to be colour blind is 0. Colour blindness is a sex linked recessively inherited disorder. Normal man has normal x and y chromosomes. Carrier female have one normal x and one abnormal x chromosome.The probability of their son to get colour blindness is 50%.

Keep practicing — related questions