The replicative status of heterochromatic and euchromatic DNA in two somatic tissues of Dermestes maculatus (Dermestidae: Coleoptera)

Replication of DNA present in euchromatin and heterochromatin remains in step in most nuclei of the testis wall of Dermestes maculatus. However, in a minority class of testis wall nuclei heterochromatic DNA has undergone two or three fewer rounds of replication than DNA located in euchromatin. A similar situation exists in many nuclei of the Malpighian tubule though here there is also the possibility that the euchromatic and heterochromatic DNA components are themselves not completely replicated.