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Tay Sachs And Duchenne Muscular Dystrophy Mutations

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What is the primary genetic difference between Tay-Sachs disease and Duchenne muscular dystrophy?
ATay-Sachs disease is caused by the deletion of a nucleotide base from the hexosaminidase gene, whereas Duchenne muscular dystrophy is caused by the addition of a nucleotide base to the dystrophin gene.
BTay-Sachs disease is caused by a nucleotide base substitution in the hexosaminidase gene, whereas Duchenne muscular dystrophy is caused by the deletion of a nucleotide base from the dystrophin gene.
CTay-Sachs disease is caused by a nucleotide base substitution in the hexosaminidase gene, whereas Duchenne muscular dystrophy is caused by the addition of a nucleotide base to the dystrophin gene.
DTay-Sachs disease is caused by the insertion of a nucleotide base into the hexosaminidase gene, whereas Duchenne muscular dystrophy is caused by the deletion of a nucleotide base from the dystrophin gene.
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