The Cortés Ortiz Lab is a research group at the University of Michigan, Department of Ecology and Evolutionary Biology. Our lab studies the intricacies of natural hybridization and how interspecific gene flow affects the ecology and evolution of living organisms, largely, but not exclusively in primates. Many of our projects use molecular approaches to study a hybrid zone between two sister species of howler monkeys (Aloutta palliata x A. pigra) in Mexico.