6533b85dfe1ef96bd12be069

RESEARCH PRODUCT

Preparation and karyotype analysis of mitotic chromosomes of the freshwater sponge Spongilla lacustris.

Georg ImsieckeWerner E. G. M�llerUlrich Pascheberg

subject

medicine.medical_specialtyCytogeneticsZoologyChromosomeMitosisKaryotypeDNABiologybiology.organism_classificationPoriferaSpongeMicroscopy ElectronSpongilla lacustrisKaryotypingGeneticsMicrochromosomemedicineAnimalsMitosisDevelopmental biologyGenetics (clinical)

description

The present study documents for the first time the karyotype and mitotic chromosomes of a sponge. For the studies the freshwater sponge Spongilla lacustris (Lin. 1758) was used. Its karyotype comprises nine different chromosome pairs ranging in size from 2.1 to < or = 0.7 microns. Changes in size and shape of the chromosomes during the progression of mitosis are documented both light and electron microscopically. The data reveal that the lowest multicellular eukaryotes, the sponges, have already reached a high level of evolution of the mitotic mechanism.

yearjournalcountryeditionlanguage
1993-12-01Chromosoma
10.1007/bf00650899https://pubmed.ncbi.nlm.nih.gov/8149813