Search for tag: "backbones"

13_08aDNADoubleHelix_A.mp4 duration 54 seconds 13_08aDNADoubleHelix_A.mp4 13_08aDNADoubleHelix_A.mp4	13_08aDNADoubleHelix_A.mp4 backbones model helix phosphate sugar dna ribbons ribbon simplicity ball cytosine guanine thymine adenine strand bases pair hydrogen crossbar bars From Rachel Petrofes Chapa 0 likes 0