I think you forgot to give the options along with the question. I am answering the question based on my research and knowledge. "The role of creativity in scientific discovery" best <span>illustrated by Watson and Crick's ball-and-stick model of DNA. I hope that this is the answer that has actually come to your help.</span>
Nucleotides is the answer: they have a phosphate group, a deoxyribose sugar, and a nitrogenous base.
