This article presents an extended analogy that connects infinite sequences and series to the science of genetics, by identifying power series as "DNA for a function." This analogy allows standard topics such as convergence tests or Taylor approximations to be recast in a "forensic" light as mathematical analogs of genetic concepts such as DNA testing or genetic profiling. This gives students, nowadays familiar with the ideas of "extracting DNA" or "getting a hit on CODIS" from pop culture, a familiar vantage point to understand and explore this fascinating part of calculus. We present an outline for implementing such material, and discuss some pedagogical advantages of this method of presentation. (Contains 1 table, 2 figures, and 1 footnote.)