Multiple choice

The mutations causing no change in their products are known as

  1. missense mutations

  2. nonsense mutations

  3. silent mutations

  4. splice-site mutations
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Most amino acids are encoded by several different codons. For example, if the third base in the TCT codon for serine is changed to any one of the other three bases, serine will still be encoded. Such mutations are said to be silent because they cause no change in their product and cannot be detected without sequencing the gene (or its mRNA).

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