Fig. 1

BAC hybridization signals on chromosomes of N. coriiceps. a Specific signal: Strong, discrete signal on a single chromosome pair (example with BAC M11). b Repetitive signal: Repetitive, typically centromeric/pericentromeric signal on multiple chromosome pairs (example with BAC B9). c Weak signal: Weak signal, rarely detected on chromosomes (example with BAC •J2). Only BAC probes producing specific signals were used for subsequent analyses. Hybridization patterns were independent of the fluorochrome used for detection. Scale bars: 10 μm