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.
On average, every duplication of the human genome includes 100 new errors, so all that reproducing gave our DNA many opportunities to accumulate mutations. But evolution hasnât had enough time to weed out the dangerous ones: gene variants that might make us prone to illness, or simply less likely to survive. 1  Joshua Akey of the University of Washington recently explored the average age of our speciesâs gene variants, finding that most are very young.