We are grateful to the biology master’s students for their participation in this study. We thank Aaron Coleman, Stanley Lo, and Alison Crowe for their helpful comments about the initial version of this article and Lisa McDonnell, James Cooke, and Patricia Alexander for their critical reading of one of the later versions of this paper. This work was supported by the UCSD Academic Senate Research grant, Division of Biological Sciences Summer Research Fellowship, and Biology Scholars Program Alumni Fellowship to E.T.