A person with a genotype of HbSS has sickle cell disease. A person with a genotype of HbAS allele carries the sickle cell
trait. A person with a genotype of HbAA does not have sickle cell disease and does not carry the trait. The Punnett square
shows the genotype of two people carrying the sickle cell trait.
HAS
A AA AS
S AS SS
What are the chances that their offspring will have sickle cell anemia?
O 0%
25%
O 50%
O 100%