Genetic evolution sometimes happens through mutation. A small error when duplicating DNA results in a new trait or ability which, if suiting for the environment, will give that specific lifeform an advantage.
I visualised the evolutionary effect of mutation using images that had small errors in their 'DNA' as well. I wrote a script in Processing that opened the code for an image, replaced a small chunck of the code and saved the image. Then the saved image would be opened, mutated and saved. Because it stayed clear of the header in the code the image was still able to be shown while continueing to 'mutate'. Sometimes there would be small changes, sometimes big or none at all. The posters show three series of images that had the same starting point, but through genetic mutation ended up looking very different.