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.
Role of selection in fixation of gene duplications Role of selection in fixation of gene duplications Kondrashov, Fyodor A.; Kondrashov, Alexey S. 2006-03-21 00:00:00 New genes commonly appear through complete or partial duplications of pre-existing genes.