The occurrence in a diploid individual of cells containing 4C, 8C, 16C, 32C, etc., amounts of DNA in their nuclei. The nurse-cell nuclei in Drosophila egg chambers are good examples of endopolyploidy. The highest level of endopolyploidy known occurs in the larva of the silkworm moth. The silk-producing cells have nuclei that are at least 1 million–ploid. See Chronology, 1979, Perdix-Gillot; Bombyx mori, silk.
Subjects: Genetics and Genomics.