Delicious DNA
In 7th grade, students are studying how DNA holds the instructions to make a new organism develop, survive and reproduce. A molecule of DNA is composed of two backbones composed of phosphate and sugar and four types of nitrogen bases. When isolated from a cell and stretched out, DNA looks like a twisted ladder. This shape is called a double helix. Students constructed their own sweet models of DNA by using marshmallows and Twizzlers. Who knew DNA could be so delicious?