Program in Bioinformatics and Computational Biology, Iowa State University, Ames, Iowa, United States of America.|Department of Psychology, Iowa State University, Ames, Iowa, United States of America.|Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, United States of America.|Department of Mechanical Engineering, Iowa State University, Ames, Iowa, United States of America.|Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, United States of America.|Agricultural Research Services, United States Department of Agriculture, Ames, Iowa, United States of America.|Program in Bioinformatics and Computational Biology, Iowa State University, Ames, Iowa, United States of America.|Program in Bioinformatics and Computational Biology, Iowa State University, Ames, Iowa, United States of America.|Department of Mechanical Engineering, Iowa State University, Ames, Iowa, United States of America.|Department of Psychology, Iowa State University, Ames, Iowa, United States of America.|Program in Bioinformatics and Computational Biology, Iowa State University, Ames, Iowa, United States of America.