Genome size drives morphological evolution in organ-specific ways 1 2 Michael W. Itgen 1 , Dustin S. Siegel 2 , Stanley K. Sessions 3 , Rachel Lockridge Mueller 1 3 1. Department of Biology, Colorado State University, Fort Collins, CO 80523, USA 4 2. Department of Biology, Southeast Missouri State University, Cape Girardeau, MO 5 63701, USA 6 3. Biology Department, Hartwick College, Oneonta, NY 13820, USA 7 Corresponding author: Itgenm@colostate.edu 8 9 . CC-BY-ND 4.0 International license available under a (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made The copyright holder for this preprint this version posted August 17, 2021. ; https://doi.org/10.1101/2021.08.17.456171 doi: bioRxiv preprint