Question

If the parents are heterozygous for sickle cell anemia, the possibility of perfectly normal child would be Select one: a. Nil b. 50% c. 25% d. 75%

Answer 1

Answer:

b) 50%

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Answer 2

Answer:

50%

If both parents have sickle cell trait (HbAS) there is a one in four (25%) chance that any given child could be born with sickle cell anaemia. There is also a one in four chance that any given child could be completely unaffected. There is a one in two (50%) chance that any given child will get the sickle cell trait.