Question

dna mutations
quiz complete
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which type of mutation always produces a stop codon?
missense
nonsense
silent
point

Explanation:

A nonsense mutation is a type of point mutation in which a single nucleotide change results in the formation of a stop codon (such as UAA, UAG, or UGA in mRNA). This premature stop codon causes the translation process to terminate early, leading to a truncated and usually non - functional protein.

• A missense mutation changes one amino acid in a protein.
• A silent mutation does not change the amino acid sequence of the protein (due to the degeneracy of the genetic code).
• A point mutation is a general term for a single - nucleotide change and can be missense, nonsense, or silent.

Answer:

nonsense