Figure 4From: Alike but different: the evolution of the Tubifex tubifex species complex (Annelida, Clitellata) through polyploidizationFISH analysis of metaphase chromosomes of T. blanchardi (A) and the Tubifex lineages of the Lambro River with 75 (B), 100 (C) and 150 (D) chromosomes. The chromosomes are pseudocolored in blue, and the 18S rRNA gene hybridization signals are pseudocolored in red (arrowheads). Scale bars are 4 μm.Back to article page