A genetic analysis of the German cockroach explained its rise in southern Asia millenniums ago, and how it eventually turned up in your kitchen. A genetic analysis of the German cockroach explained its rise in southern Asia millenniums ago, and how it eventually turned up in your kitchen. Cockroaches, Genetics and Heredity, Evolution (Biology), International Trade and World Market, Research, Far East, South and Southeast Asia and Pacific Areas, Central Europe, Proceedings of the National Academy of Sciences, your-feed-science NYT > Science