Figure 1From: Pre-invasion history and demography shape the genetic variation in the insecticide resistance-related acetylcholinesterase 2 gene in the invasive Colorado potato beetleFrequency (%) of genotypes for the OP resistance-associated mutation S291G in Colorado potato beetle populations. N; number of individuals, RR; homozygous, RS; heterozygous for the OP resistance-associated mutation S291G, SS: homozygous lacking the S291G mutation.Back to article page