Fig. 3
From: Artificial Selection and Domestication: Modern Lessons from Darwin’s Enduring Analogy
A plant of the maize progenitor, teosinte (left), with multiple stalks and long branches, is shown next to a plant of cultivated maize (right) with its single stalk. A maize ear (inset) bears its grain naked on the surface of the ear, whereas a teosinte ear (inset) has its grain (not visible) enclosed in the triangular casing that comprises the ear. From Doebley et al. (2006), reproduced by permission of Elsevier and Dr. John Doebley