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An insertion mutation is when an extra nucleotide is inserted into the DNA molecule.

For example if the original sequence is:

AATGCATGGACT

an insertion could be:

AATCGCATGGACT

This would change the code from: AAT GCA TGG ACT

to AAT CGC ATG GAC T.....

You can see that after the insertion all the codes are changed. Since each set of three nucleotides codes for an amino acid, this would change all of the subsequent amino acids in the protein coded for by the gene.

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15y ago

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