Beschreibung:
<jats:p>Histones of the mealybug <jats:italic>Planococcus citri</jats:italic> have been isolated and characterised. Although no major differences were observed between the core histones of male and female insects, the pattern of H1 histones was significantly different between the sexes. A specific hyperphosphorylated H1 was found to be present only in male mealybugs, where the paternal chromosomes are condensed and transcriptionally inactive.</jats:p>