Origami DNA model
Source: www.dnai.org
Topic: Origami
Sort Desciption: Origami DNA model. Mountain fold. Solid lines are “mountains” and are to be. folded away from you with the peak. pointing towards you. ...
Content Inside: Origami DNA model Mountain fold Solid lines are “mountains” and are to be folded away from you with the peak pointing towards you. 1. Fold all solid lines going lengthwise down the page into "mountain folds". Dashed lines are “valleys” and are to be folded towards you with the peak pointed away from you. Valley fold 2. Fold all dashed lines going lengthwise down the page into "valley folds". Mountain folds along solid lines. Valley folds along dashed lines. Making your DNA model Folds for your DNA model 1 Adapted from Yen, T., 1995, Make your own DNA. Trends in Biochemical Sciences, 20: 94. At this point, the paper should look like this: 3. Bring the two sides of the model together, similar to an “I” beam. 4. Look for the words “front” and “back” at the top of your model. Hold the model with the front side facing you. 5. Fold the two sides of the DNA model so that the “front” side is flat. 6. Crease each solid, horizontal line into a mountain fold (away from you). 7. Flip the model to the “back” side. Crease each solid diagonal line into a mountain fold (away from you). Your model should look like this. This side should be facing you. 2 8. Fold ALL of the creases together in the directions of the folds made in steps 6 and 7. Your model will fold up like an accordion. While you are folding, pinch the middle of the model to keep it together to make a cyllindrical shape. Fold ALL of the creases together like an accordion. (The dotted lines in the diagrams below may help) Continue to fold, pinching these folds together in the center as you go. When you are done folding, the model should resemble the diagram above. You should be able to hold your model in one hand. 3 9. Release the model. You should be able to see the shape of a DOUBLE HELIX. 10. Straighten out the sides of the DNA model (the DNA “backbones” ) to make them perpendicular to the creases in the middle (as in step 3 ...
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