We study the steady-state probability distribution p for Markov chains G describing Genetic Algorithms (GA) and Genetic Programming (GP). That means: G p = p. Based upon a reduction method that associates any such Markov chain another Markov chain over 2 states only, we derive convergence properties for p in regard to uniform populations and populations containing globally optimal candidate solutions. Strong ergodicity of inhomogeneous Markov chains as above are discussed.