1. Department of Genetics, University of Georgia, Athens, Georgia, 30602;
2. current address: School of Biology, Georgia Institute of Technology, 310 Ferst Drive, Atlanta, Georgia, 30332;
3. Department of Genetics, Purdue University, West Lafayette, Indiana, 47907-1159;
4. additional authors (all have been in or associated with the Avise lab) are Beth Dakin, Anthony Fiumera, Dean Fletcher, Mark Mackiewicz, Devon Pearse, Brady Porter, and S. David Wilkins.