t corresponds to the order of the colors listed in your color key.
- Step 11: Then complete Part 2 of your model and decode your model. The jewelry you created will be yours to keep and wear/use after you have handed in this completed worksheet and your teacher has corrected it.
NOTE: Provided you have the optional materials needed, you can also use this pattern to make necklaces, bracelets, tie clips, or other pieces of DNA jewelry. To make larger models, start with two lengths of wire for the sugars-phosphates strands approximately double the desired length of the finished piece of jewelry. String the beads as directed, (Steps 1-9). Hint: Thread the bases in sections--18" of wire in the u-shape for base threading is manageable. Finish off the necklace or bracelet with a barrel clasp, a keychain, or earring wires, as directed in Step 9. Some students might want to make the standard two inch DNA model and use cording to finish into a necklace or bracelet.
Part 2 - Decoding your Model:
|DNA Jewelry Model:||by:______________|
|A =||(Tape here. Make sure that|
|T =||the top corresponds to|
|C =||your color key.)|
(Color code a diagram below, to correspond to the colors of the beads in your model. Then, based on your model, list the m-RNA bases, the t-RNA bases, and the amino acids that the sense strand of your DNA coded for.)
(teacher can use the preceeding as a header on worksheet).
As part of this unit, we see A&E's "The Race for the Double Helix", read Watson and Crick's Nobel Prize-winning paper and make a showcase to show off their models. (The showcase has pictures of Watson, Crick, and an "I Love Rosalind" picture, directions for the model, and model on the decoding sheet. To display more models, the remainder are on index cards with students' names.)
Some excellent books for student and teacher are:
- Rosalind Franklin and DNA by Anne Sayre-1975
- What Mad Pursuit by Francis Crick-1988
- The Double Helix by James D. Watson-1968
Catalog card #68-16217