TY - RPRT TI - Sibling rivalry: Males with more brothers develop larger testes AU - Fisher, H. S. AU - Hook, K. A. AU - Weber, W. D. AU - Hoekstra, H. E. PY - 2018 DO - 10.1101/332775 UR - https://www.biorxiv.org/content/10.1101/332775v1 ID - 10.1101/332775 ER -