What are the chances of having a baby with sickle cell trait?
When ONE parent has sickle cell trait and the other parent has normal hemoglobin the child may inherit:
- two normal hemoglobin genes, or
- one normal hemoglobin gene and one sickle cell gene.
With EACH pregnancy there is a:
- 50% chance that the baby will have normal red blood cells (AA).
- 50% chance that the baby will have sickle cell trait (AS).