(G) Schematic illustration for the experiments shown in H, I. (H) Representative images of chromosome spreads after re-expression of endogenous CENP-AEA into a CENP-AmRFP-DHFR overexpression background and subsequent removal of the overexpression as illustrated in (G). Antibody against CENP-C was used to score for the presence of the functional centromere. Scale bar, 5µm. (I) Quantification of the indicated events after one CENP-AOFF/ON cycle compared to treatment shown in (G). 