Question

dna mutations
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many different types of mutations can occur within the body. tay - sachs disease is a deadly disorder that is caused by
a missing codon in the gene coding for production of the hex a enzyme in the body. which type of mutation is
responsible for causing tay - sachs disease?
substitution
replacement
insertion
deletion
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Explanation:

• Substitution and replacement (synonymous with substitution in this context) involve swapping one nucleotide for another.
• Insertion is adding extra nucleotides.
• Deletion is removing nucleotides. Since Tay - Sachs is caused by a "missing codon", it means nucleotides (a codon is a set of three nucleotides) have been removed.

Answer:

deletion