In a 2014 PNAS article, Michael Cortez (now faculty at Utah State) led an effort to characterize how coevolutionary dynamics can affect ecological dynamics. In a linked series of theoretical analyses, computational simulations and statistical analysis of time series data, we show how predator peaks can precede prey peaks when both predators and prey possess multiple genotypes within their corresponding populations. Hence, changing genotype frequencies influences the structure of the total dynamics of populations. This article has discussed here: