A. 0.75
B. 0.25
C. 0.5
D. .1
Correct Answer:
Option C – 0.5
Explanation
A sickle cell carrier (AS) and a normal woman (AA), when crossed will yield:
2 normal offsprings (AA) and 2 sickle cell carriers (AS).
Hence, the probability of a normal child = 24
= 0.5
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