Pachytene bivalents of Bittacus sinicus, stained with C-banding (A, B) and DAPI (C, D) A, C early pachytene, showing the intermediate heterochromatin on bivalents and the heteropycnotic sex chromosome (arrowhead) B, D late pachytene, showing the sex chromosome with a dot-shaped heterochromatic block (arrowheads). Arrows point to the intermediate heterochromatin. Scale bars: 10 μm.

 
 
  Part of: Miao Y, Hua B-Z (2020) The highly rearranged karyotype of the hangingfly Bittacus sinicus (Mecoptera, Bittacidae): the lowest chromosome number in the order. Comparative Cytogenetics 14(3): 353-367. https://doi.org/10.3897/CompCytogen.v14i3.53533