DNA is made from quite complex molecules called ‘bases’, there are four main bases, cytosine, adenine, guanine and thymine. They pair together (cytosine (C) to thymine (T) and guanine (G) to adenine(A)) always in the same pairs. The bases also sit side-by-side in a chain, so if there was AGTC stuck together side-by-side, the other chain would be GACT (because of the base pairing). The structure of DNA is like a ladder, where each base-pair is a ‘rung’ on the ladder and each base is a join between the rung and the sides of the ladder.
DNA bases can be ordered to create a ‘code’ to make all the things necessary for life to exist – it is one of the most amazing discoveries that I can think of. Very complex and beautifully well designed.
Comments
Owen the BOSS 10 commented on :
Thank you Robert!