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Sickle Cell (1 of 3) Genes

Image caption:
Sickle cell anemia is caused by a mutation at the genes level.

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If you use this image in your own non-commercial project please credit it to the University of California Museum of Paleontology's Understanding Evolution (http://evolution.berkeley.edu).

This image is part of a series:

Sickle Cell (2 of 3) Protein
Normal hemoglobin (left) and hemoglobin in sickled red blood cells (right) look different; the mutation in the genes changes the shape of the hemoglobin molecule, allowing it to clump together.

Sickle Cell (3 of 3) Cell
Normal red blood cells (top) and sickle cells (bottom)