DNA

Non-canonical bases

A number of noncanonical bases are known to occur in DNA. Most of these are modifications of the canonical bases plus uracil.

DNA profiling

DNA profiling is also used successfully to positively identify victims of mass casualty incidents, bodies or body parts in serious accidents, and individual victims in mass war graves, via matching to family members.

DNA

!The structure of the DNA [double helix (type B-DNA). The atoms in the structure are colour-coded by element and the detailed structures of two base pairs are shown in the bottom right.](//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/DNAStructure%2BKey%2BLabelled.pnNoBB.png/330px-DNAStructure%2BKey%2BLabelled.pnNoBB.png)

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