Which statement is true about the inheritance pattern of SCD?
a. If V.M.'s wife has sickle cell trait, each child will either have SCD or be a carrier.
b. If V.M.'s wife does not have sickle cell trait, each child has a 50% risk of having SCD.
c. If V.M.'s wife has sickle cell trait, each child will can either having SCD or be normal.
d. If V.M. has children, each child will automatically have SCD regardless of his wife's
status.
a
A child will have SCD only if two sickle cell genes are inherited - one from the mother and one
from the father. In this case, if the father with SCD has a child with his wife, who carries the trait,
the child's risk is 50% for either having SCD or being a carrier. If his wife is not a carrier the children
cannot have SCD, but will inherit the trait and be carriers.
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