Sickle cell anemia
is an inherited genetic disorder. If one parent has sickle cell disease
(scd), and the other does not, all children
will be carriers of sickle cell trait.
If one parent has scd and the other has sickle cell trait, there is a 50% chance that any child will have scd. If both parents have sickle cell trait, there is a 25% chance that any child will have scd.