DNA: The iconic twisted ladder, or double-helix structure

When we picture a strand of DNA, the image we see will likely be similar to the image to the right. The iconic double-helix structure was captured by Rosalind Franklin in the 1950s, however, this popular visualisation only tells part of the story of DNA. 

A single strand of DNA is just two nanometers wide, which is smaller than a wavelength of light. This makes DNA pretty difficult to study, even with sophisticated lab equipment. 

The best method to visualise DNA as it exists inside our cells is computer modelling. In the video below, It’s Okay to Be Smart explains a more accurate way to imagine the blueprints of life.