"In general, assemblies of proteins have been analyzed using two complementary approaches: the biochemical and the genetic. In the well-known analogy to understanding how car runs, biochemists disassemble the engine, transmission and body, characterize all the pieces and attempt to rebuild a working vehicle. Geneticists, by contrast, break single components, turn the key and try to determine what effect the single missing part has on the car’s operation. This implies that genetic methods often require a specific phenotype before they can be carried out." (in Biol Proced Online. 1999 Oct 4;2:1-38).
Found this definition on my readings, quite nice one, I am both of them.
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