Picture of Paper DNA (Double Helix)
This Instructable is entered in the "The Teacher" contest. Please vote for my instructable! -General Eggs

I made one of these for my Biology class. It doesn't take very long and it looks pretty cool in the end. The one I made for school is colored. I've also made another one without using tools. Any way, here's what you need:

1 sheet of 8.5" by 11" paper
A pencil
A ruler

This can actually be done with any size of paper. This works best when the width of the sheet is around 8- 9 inches.

This could be used as a fun, cheap way to teach about DNA. Students would learn about the structure of a DNA strand and about how  the four chemicals (Guanine, Adenine, Thymine, and Cytosine) combine in long complex structures to create the blueprints for what the cell makes.

NOTE: The DNA in the photos twists towards the left. As explained to me DNA actually spirals to the right. This is just a matter of which way you make your folds. Thanks to yardleydobon for pointing this out.

Step 1: Mark it down the middle

Picture of Mark it down the middle
Mark the paper down the middle. On a standard sheet of paper that's 4 1/4".
seamster3 years ago
This is really neat! It would be even better if you included a PDF of the pattern already laid out. Just draw it out, scan it directly as a PDF, and include it in one of the steps.

(I include PDF patterns with some of my instructables, and people really respond well to it. Just a thought!)
General Eggs (author)  seamster3 years ago
The PDFs are easy to find on the internet. I was just trying to do it without a template because so many people make tutorials about using a template.
Ah, I see. Very good!
Any links for the PDF's? i cant find any D:
General Eggs (author)  or_ford982 years ago
ah, thank you general
DNA is right-handed. Your paper helix is left-handed.
I happen to know that General Eggs is left handed. This could have contributed to this. Still it's a cool project!
General Eggs (author)  yardleydobon3 years ago
oops... the way it twists really just depends on the way you make your folds, but thanks for pointing that out!
Xenobia3 years ago
I love this! Very clear instructions, thank you.
foobear3 years ago
Nifty. I wish there was a video demo too though because I'm so dumb, I don't get it. Thank you!
Aw, ChrysN said awesome already - OK AMAZING, my mind is turning right now with a thought.... click, click, click
ChrysN3 years ago
Cool, that looks awesome!