Animals come in many different shapes and sizes. How did all of these diverse body plans evolve? In this video, Dennis Sun describes how a group of similar genes, called Hox genes, are involved in setting up different kinds of body plans in crustaceans. Dennis is a PhD student in the lab of Nipam Patel at UC Berkeley. Learn more in the full post on sciencesketches.org: http://www.sciencesketches.org/single... Written, drawn, and narrated by Dennis Sun. Edited and produced by Lisa Dennison.