Characterization of three different clusters of 18S–26S ribosomal DNA genes in the sea urchin P. lividus: Genetic and epigenetic regulation synchronous to 5S rDNA
Keywords: 5-AZA, 5-azacytidine; bp, base pair; ETS, External Transcribed Spacer; IAC, internal amplification control; MSRE-PCR, methyl sensitive restriction enzyme-polymerase chain reaction; NTS, Non-Transcribed Spacer; NOR, Nucleolar Organizer; rDNA, ribosomal DNA