While genetic association studies to identify variants that influence complex traits have primarily focused on populations of European ancestry, several recent studies investigate populations with admixed ancestry. Here we define recently admixed populations to be populations with ancestry derived within the last few hundred years from two or more progenitor groups that were reproductively isolated. A glossary of relevant terms and key concepts for genetic analysis in admixed populations is given in Table I. The two largest minority groups in the United States, African Americans and Hispanics, are examples of recently admixed populations.
