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.
Hb
A
S
A
AA
AS
S
AS
SS
What are the chances that their offspring will have sickle cell anemia?
0%
25%
50%
100%
Answers: 1
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