I'm a high school science teacher. I thought this would be a fun way for my students to learn the structure of DNA. Next year, I'll have them make a more educational "model" and come in after school to make these.
I've added tips that I would find helpful when making these as well as some science insights so you can impress all your friends with your DNA brilliance!
Step 1: Materials
*6 different colors of seed beads
-28 beads to represent sugars
-28 beads to represent phosphates
-8 beads to represent Adenine
-8 beads to represent Thymine
-8 beads to represent Cytosine
-8 beads to represent Guanine
*2 earring hooks
*2 earring backs (optional)
Additional possibly useful notes:
-The length of wire does not have to be exact. 20 cm is a good beginning length. I'm able to use slightly shorter pieces now, but started with really long pieces.
-The number of beads used (and length of wire) can be altered to make the earrings longer.
-The earring backs are not necessary, but they were only about $3 for an entire package at Michael's.
-The number of Adenine and Thymine beads should be equal, as should the Guanine and Cytosine. (Chargaff's Rule for you science buffs.) However, you don't have to have 8 of each or have them in any specific order.