What do a human, a rose, and a bacterium have in ... all DNA is composed of the same nitrogen-based molecules. So how does DNA differ from organism to organism? It is simply the order in which ...

Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism. All living things have DNA within their ...

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Conducted by a private genomics company, the analysis found 2% of tested hot dogs contained traces of human DNA.