chromatin
chro.ma.tin \'kro--m*-t*n\ \.kro--m*-'tin-ik\ n : the part of a cell nucleus that stains intensely with basic dyes; spe cif : a complex of a polymerized nucleic acid with basic proteins of protamine or histone type present in chromomeres and held to be the physical carrier of genes - chro.ma.tin.ic aj