DNA Model Project Objective: To create a structurally accurate model of a DNA molecule. Instructions: You must create a 3D model of DNA. It may either stand on its own, or hang from the ceiling. You may construct the model out of any materials that you choose. The model must accurately show: 1. 2. 3. 4. A 3D double helix structure of DNA (10 base pairs) Correct base pairing (A-T, C-G) The sugar-phosphate backbone Correct hydrogen bonding between nitrogen base pairs DNA Model Project Objective: To create a structurally accurate model of a DNA molecule. Instructions: You must create a 3D model of DNA. It may either stand on its own, or hang from the ceiling. You may construct the model out of any materials that you choose. The model must accurately show: 1. A 3D double helix structure of DNA (10 base pairs) 2. Correct base pairing (A-T, C-G) 3. The sugar-phosphate backbone 4. Correct hydrogen bonding between nitrogen base pairs DNA model Rubric TURN IN THIS SHEET WITH MODEL Name __________________________________ Date ______________________Period _______ Nitrogen bases are coded and correctly paired. Appropriate number of hydrogen bonds shown 5 pts. Deoxyribose and phosphates are correctly represented, with alternating colors or shapes and nitrogen bases only coming from sugars. 5pts. Nitrogen bases are coded but incorrectly paired or inaccurate hydrogen bonding 3 pts. Nitrogen bases are not coded or paired and no hydrogen bonds are shown 1pt. Deoxyribose and phosphates are represented with alternating colors or shapes, but nitrogen bases are attached at random. 3pts. Railings (sides) are part of model, but not shown in alternating colors or shapes. 1pt. Model Likeness to DNA Model is a 3D twisted ladder. 5 pts. Model is 3D, but flat – not a twisted ladder. 3 pts. Model is not 3D 1 pt. DNA Structure Key Present and accurately identifies sugar, phosphate and each nitrogen base present. 5pts. Present, but not complete. Missing items identifying components of DNA helix 1 pt. Completeness At least 10 nitrogen base pairs included in the model to show understanding and concept. 5pts. Present and complete, but fails to accurately identify sugar, phosphate and each nitrogen base present 3 pts Less than 10 base pairs (6 -9) included in the helix model. 3pts. Neatness/Effort Neat, Organized, Color coded and demonstrates satisfactory effort . 5 pts. Neat and organized but lacks color coding and/or insufficient effort 3 pts. Disorderly, lacks color coding and appears rushed without satisfactory effort put forth 1 pt. Nitrogen bases (rungs) Sugars and Phosphates (railings) Minimal number of base pairs (less than 5) included in the model. 1 pt. . Total Points Earned _____________/30 Teachers Comments: DNA model Rubric TURN IN THIS SHEET WITH MODEL Name __________________________________ Date ______________________Period _______ Nitrogen bases are coded and correctly paired. Appropriate number of hydrogen bonds shown 5 pts. Deoxyribose and phosphates are correctly represented, with alternating colors or shapes and nitrogen bases only coming from sugars. 5pts. Nitrogen bases are coded but incorrectly paired or inaccurate hydrogen bonding 3 pts. Nitrogen bases are not coded or paired and no hydrogen bonds are shown 1pt. Deoxyribose and phosphates are represented with alternating colors or shapes, but nitrogen bases are attached at random. 3pts. Railings (sides) are part of model, but not shown in alternating colors or shapes. 1pt. Model Likeness to DNA Model is a 3D twisted ladder. 5 pts. Model is 3D, but flat – not a twisted ladder. 3 pts. Model is not 3D 1 pt. DNA Structure Key Present and accurately identifies sugar, phosphate and each nitrogen base present. 5pts. Present, but not complete. Missing items identifying components of DNA helix 1 pt. Completeness At least 10 nitrogen base pairs included in the model to show understanding and concept. 5pts. Present and complete, but fails to accurately identify sugar, phosphate and each nitrogen base present 3 pts Less than 10 base pairs (6 -9) included in the helix model. 3pts. Neatness/Effort Neat, Organized, Color coded and demonstrates satisfactory effort . 5 pts. Neat and organized but lacks color coding and/or insufficient effort 3 pts. Disorderly, lacks color coding and appears rushed without satisfactory effort put forth 1 pt. Nitrogen bases (rungs) Sugars and Phosphates (railings) . Total Points Earned _____________/30 Teachers Comments: Minimal number of base pairs (less than 5) included in the model. 1 pt.