Department of Molecular Biology, University of Wyoming, 1000 E. University Ave, Laramie, WY, 82071, USA.|Department of Mathematics, University of Wyoming, 1000 E. University Ave, Laramie, WY, 82071, USA.|Department of Molecular Biology, University of Wyoming, 1000 E. University Ave, Laramie, WY, 82071, USA. RothDon@uwyo.edu.