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Below is a segment of a strand of normal DNA:

ATA GCA TGA

If the DNA sequences changes to:

AAT AGC ATG A

Below is a segment of a strand of normal DNA: ATA GCA TGA If the DNA sequences changes-example-1
User Sehnsucht
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1 Answer

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This would be an example of:
C) an insertion mutation.

Notice how the sequence contains the same letters as before, only an A is added to the beginning. Adding extra nucleotides is an example of an insertion mutation, a type of frame-shift also, because the reading frame will be thrown off downstream.
User Roy Clarkson
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