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About the disease Tay Sachs?


Why do some websites say that Hex A is the gene that causes the disease and then others says that Hex A is the enzyme that is lacking in those with this disease?

Tay-Sachs disease occurs when the body lacks hexosaminidase A, a protein that helps break down a chemical found in nerve tissue called gangliosides. Without this protein, gangliosides, particularly ganglioside GM2, build up in cells, especially nerve cells in the brain.

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