Similar to Figure  2, but here we present a zoom of the CMD of Cetus (left panel) and Tucana (right panel), corresponding to the core He-burning stage. In each panel the box represents the region used to select the candidate progeny of the blue plume stars. Four tracks are overplotted, for different mass and metallicity assumptions. The filled stars mark the location of the anomalous Cepheid variables detected in these galaxies (Bernard et al. 2009).