Histone variant- and histone N-tail-modification dynamics at meiotic and post-meiotic X,Y chromatin.

1group 1: histone lysine methyl modifications displaying autosomal heterochromatin staining.2group 2: histone lysine methyl modifications displaying autosomal even staining.In parenthesis: number of nuclei.*No quantitative analysis was performed on γH2AX staining in early round spermatids as this modification was never observed.Modifications were studied in P1-3 and C3, except for H3K4me2 which was studied in P2 and C3, and H3.3S31ph which was studied in P2.