Yes, well you do have DNA, and you can eat it too! Build yourself one of these clever edible strands-this is what happened when I gave my kids the project...
The supply plate (which is one of those Mak-It plates I made many moons ago, and no, I didn't misspell that -as that is what the company is called) with the licorice, toothpicks and marshmallows.
Supplies ready to go-oh, the boy is wearing it?!
the end result (before labels-which they didn't do-only I did for a sample DNA project)
careful b/cuz those toothpicks are "picky" and when trying to shove them into the licorice, you may get poked..as I did! LOL....
You can find the directions here: PDF file for Have Your DNA and Eat it too
DNA and RNA page from this mighty helpful site: Awesome Science Teacher Resources.
That site has lots of goodies to download for your science notebook too!