C) Metaphase I (4hrs after GVBD) and II spreads after GFP-Sgo2 expression (from GV onwards). Spreads were stained with CREST serum (red), Hoechst for DNA (grey), GFP-Sgo2 was visualized by GFP fluorescence (green). Arrowheads mark separated sister kinetochores. On the right, graph showing percentage of metaphase II spreads containing bivalent chromosomes. In (A-C) n indicates the number of control non-injected and GFP