Credit:
Art by Alex Cagan, @ATJCagan. Click to see a larger version. For more information on these Nobel prize-winning studies see: (1) Aplysia sea slugs, (2) Caenorhabditis elegans worms, (3) Tetrahymena ciliates, (4) Drosophila melanogaster fruit flies, (5) Saccharomyces cerevisiae yeast