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.
Insertion or deletion of a single letter can sometimes cause a frameshift mutation, in which the entire amino acid sequence of the resulting protein is changed. Gene or Region Duplication. Sometimes errors during DNA replication can duplicate an entire gene or region of a genome. This type of error can cause more of a protein to be produced, because after duplication, there are two genes that encode it rather than one.