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BIOLOGY

JAMB 2012 - Question 42

Biology 2012 JAMB Past Questions - Question 42: When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?

Choose the most appropriate option for the gap .

When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?

A: 25%

B: . 50%

C: 75%

D: 100%.

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Correct Answer

Explanation

Let capital'C' represent normal sight equipped to feed on these food while small c'represent colour blindness.Results: 1 carrier (girl) 1 colour blind girl 1 normal boy 1 colour blind boy