SWEET DNA
MODEL
Science Behind the Experiment
What is DNA?
DNA is what contains the information that makes us who we are. It's found in every living thing, from you and me to the grass and trees outside.
Where is DNA found?
Our bodies are made up of millions of tiny things called cells, and DNA is found inside each and every one of these cells.
What is DNA made of?
DNA is made up of even smaller things called nucleotides, which each have a sugar phosphate backbone and nitrogen base (the types are A, T, C, G).
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What is the structure of DNA?
The shape of DNA is a twisted ladder, with the sugar phosphate backbone being the side rails of the ladder and the nitrogen bases being the steps on the ladder. Each step of the ladder is made up of the bases A with T or C with G (it has to be this exact pairing of the bases).
What You Will Learn
In the Sweet DNA Model experiment, students use colorful candies to create a yummy representation of DNA. They assign different candies to represent the nucleotide bases (A, T, C, and G) and arrange them in a double helix structure. By following the base pairing rules, students can see how the candies fit together and understand the unique structure of DNA. It's a fun and tasty way to learn about the building blocks of life!
Supplies
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-Toothpicks
-Licorice
-Assorted candies: Choose candies of different shapes, colors, and sizes to represent the nucleotide bases (A, T, C, and G). Examples include gummy bears, fruit chews, or any other candy that can be easily attached to the model.
Steps
Step 1
Create candy bases: Using a toothpick and two different pieces of candy, insert the candy through the toothpick. Be careful to follow the base pairing rule of A with T, and C with G. (With different colors representing each letter)
Step 2
Attach candy bases: Attach the candy pieces to the backbone, following the base pairing rules (A pairs with T, C pairs with G).
Step 3
Build the double helix: Carefully twist the candies in a spiral pattern, creating the iconic double helix structure of DNA.
