Fig. 1. Scheme summarizing the most relevant chromosomal events and the distribution of acetylated histones H3 (H3K9ac and H3K14ac) and H4 (H4K8ac and H4K12ac) in early germline nuclei at the resting stage and male meiosis in S. ocellaris. Maternally derived chromosomes are in red and paternally derived chromosomes in blue. Early germ nuclei contain three maternal and three paternal autosomes (A) plus one maternal and two paternal X chromosomes (X). Chromosomes containing highly acetylated histones H3 and H4 are marked in yellow, whereas chromosomes containing under-acetylated histones H3 and H4 are unmarked. E, chromosomal elimination events. The figure has been modified from Goday and Ruiz (Goday and Ruiz, 2002).