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Tay-Sachs disease is caused by a mutation in the HEXA gene on chromosome 15, which leads to a deficiency of the enzyme hexosaminidase A, resulting in the accumulation of toxic substances in nerve cells. In contrast, sickle cell anemia is caused by a mutation in the HBB gene on chromosome 11, which leads to the production of abnormal hemoglobin (hemoglobin S) that causes red blood cells to become misshapen and less efficient in transporting oxygen. While both are inherited genetic disorders, they affect different genes and result in distinct pathological mechanisms and symptoms.

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1w ago

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