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WHAT: High school students and other citizen scientists collecting and helping analyze American cockroaches using DNA barcoding. WHY: Genetic diversity is a window into evolution and patterns of migration. American cockroaches originated in Africa and hitchhiked around the world on commercial goods. This project asks: 1. Do American cockroaches differ genetically between cities? 2. Do US genetic types match those in other parts of the world? 3. Are there genetic types that represent undiscovered look-alike species?