DNA Modeling Objectives: Identify the components of a DNA molecule Construct a model of a molecule of DNA Materials: Cutouts of basic subunits of DNA Crayons Scissors Tape or glue Procedure: 1. Cut out all of the units needed to make the nucleotides from the handout provided at the end of the module. 2. Color code the nitrogenous bases, phosphorus, and sugars according to the teacher's directions. Adenine = yellow, Guanine = green, Thymine = blue, Cytosine = red, Phosphate = brown, and Deoxyribose = . black 3. Using the small squares and stars as guides, line up the bases, phosphates and sugars. 4. Now glue the appropriate parts together forming nucleotides. Construct DNA model using the following sequence to form a row from top to bottom: Thymine Adenine Cytosine Guanine Adenine Cytosine 5. Let this arrangement represent the left half of your DNA molecule. 6. Complete the right side of the ladder by adding the complementary bases. You will have to turn them upside down in order to make them fit. 7. Your finished model should look like a ladder.
