Osservazioni sul corredo cromosomico di Bacillus rossius Insecta, Cheleutoptera
The high variability of the chromosome number observed in the early embryonic stages of the insect Bacillus rossius and the need for karyological comparisons of different populations have suggested a study of its karyotype. The analysis of mitotic divisions in the spermatogonia and of meiotic metaphases I, have shown that the basic chromosome set of the male is made up of two large metacentrics, three medium sized telocentrics (a pair of autosomes plus a single X chromosome), and of fifteen pairs...