DNA MODEL

DNA MODEL INSTRUCTIONS
Due Date ____OCT 1st___________ .
You will build a 3-D double helix (twisted) model of DNA, deoxyribonucleic acid.
Dimensions: NO TALLER than 12 inches when mounted on a base. The maximum size of the base is 8 inches by 8 inches. Smaller is better.
Use 3 dimensional objects. (No pieces of paper glued to a form) Items you may use are coat hanger wire, wire, toothpicks, pipe cleaners, beads, tinker toys, soda straws, wood, etc. NO TAPE!!!!! You may not use a purchased DNA model kit. DO NOT USE ANY FOOD PRODUCTS!!!!!!!!! No cereal, candy, pasta, rice, etc. Use of food will result in an immediate 50 point deduction in grade points. You do not have to spend a lot of money on this project. Be creative.
Your model must include a minimum of 5 rungs made up of nucleotides. Each nucleotide must have a sugar, phosphate group, and a nitrogen base represented by different colored objects. Nitrogen bases must be bonded to the appropriate complementary base on the other side of the helix. You must have each of the four bases represented. The two sides should be twisted to look like a double helix. Use Figure 23 on page 101 as a reference.
Hints for color-coding: all 10 sugars should be the same color, all 10 phosphates should be the same color, and each of the four nitrogen bases should have their own color. Together you should have 6 different colors. Again, use Figure 23 on page 101 as a reference.
Include a properly labeled, color-coded key at the base of your double helix along with an example of one complete nucleotide. List the correct names with the correct spelling of the deoxyribose sugar, each nitrogen base and the phosphates. Use NO abbreviations. Neatness AND stability of the model on its base counts. Print your name and class period on the underside of the base.

Project is due October 1.
NOTE: There are two different bases referred to in these instructions. One refers to base pairs and the other is the base of your project. Please be sure you know the difference.