Sickle Cell Explorer
An interactive journey from a tiny gene to a big impact.
The DNA Mutation
Stage 1 of 5
Normal Hemoglobin DNA
C
T
G
A
C
T
C
C
T
G
A
G
G
A
G
A
A
G
T
C
T
Sickle Cell Hemoglobin DNA
C
T
G
A
C
T
C
C
T
G
T
G
G
A
G
A
A
G
T
C
T
In sickle cell anemia, a single "letter" in the hemoglobin gene is wrong. The code A becomes a T. Click the button to see it happen!
Did You Know?
Only one tiny letter change in about 3 billion letters of your DNA code causes sickle cell anemia!