TY - RPRT TI - Evolution in small steps - A nearly-universal rule of negative selection on codons AU - Chen, Q. AU - Lan, A. AU - Shen, X. AU - Wu, C.-I. PY - 2019 DO - 10.1101/510735 UR - https://www.biorxiv.org/content/10.1101/510735v1 ID - 10.1101/510735 ER -