Figure 1. ISSR banding patterns for multiple genotypes in each of three species. Size standards in base pairs are in the left most lanes. A: Nine adult aphids (Pemphigus obesinymphae) collected from different clones at a single locality, amplified by the 3'-anchored primer (AC)8G (UBC no. 827). Arrows highlight several of the unambiguously variable bands.; B: ISSR banding patterns ((AC)8G ) for two individual P. obesinymphae aphids each from two different clones. Clone-specific bands are indicated by arrows.