How did corn transform from the ancestral teosinte, which has small hard cornels, into the popular and juicy staple we know today? Alex Dainis explains how around 10,000 years ago, humans began picking seeds from the tastiest teosinte plants to grow, thereby selecting plants with small genetic mutations to carry on over centuries and eventually become corn. Scientists have studied corn DNA and determined that modern corn is a hybrid of two teosinte lines, both of which brought successful genes to increase tastiness!