Insertions and deletions of three base pairs:
A. change one codon and, therefore, only one amino acid in the protein sequence.
B. do not disrupt the reading frame so the protein ends up completely normal.
C. do not disrupt the reading frame so the protein will usually retain some degree of function.
D. cause frameshifts that will change the reading frame and, therefore, the sequence of the protein.
E. usually result in the expression of a truncated protein.
C
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