DNA stands for Deoxyribonucleic Acid.  It is the molecule of life and it is being abused.  Not by PCR machines and sloppy grad student's in labs but by journalists, designers, and many others on social media.  DNA is a remarkable structure molecule  that encodes many aspects of life.  It's a structure that is as famous as it is mis-represented.  How?  Well, DNA has a handedness, or in scientific jargon chirality.  The DNA that you and I know (and the guys* above in the picture found) was right-handed.  That means the DNA twists up and to the right.  It may not be obvious from just looking at the double helix but it's all in the twist.