If you have accounts in several 401(k) or other employer-sponsored plans, the IRS generally requires you to calculate a separate RMD for each retirement plan in which you participate and withdraw the appropriate distribution from each plan.
The situation resembles a stalemate in which the genes essentially do not change. Duplication resolves this conflict by allowing each duplicated gene to perform a singular function. The overall function of the genes in a given pathway is preserved, and now mutations in the genes can be selected for that will optimize that specific function.
Here's what happens: you may already know that evolution is driven by selection for or against genes. We inherit genes on chromosomes that form in haploid cells. In order for this to occur, cells such as sperm or egg have to divide during meiosis. In meiosis the sets of identical chromosomes line up and genes are able to exchange places at their locus ( the place where the gene is located on the chromosome). See the diagram: This ability to switch affects the outcome of the gamete and as such evolution.