However, as the population size increases further, beneficial mutations take longer to fix, maintaining diversity in the population and allowing double mutants to stochastically tunnel on the declining wild-type background [ 15- 17].
What's more, the variety of devices that must be fixed and maintained is expanding.
Do too many cities aspire to fanciful dreams rather than fixing and maintaining what's there?
Most G.E. businesses have self-help sites that give users step-by-step guidance for fixing or maintaining products.
And justifiably so: compared with damming the Hudson, the idea of, say, fixing and maintaining Manhattan's aging sewer system seems like the definition of tedium.
There is no need to raise fees, unless that money goes directly back to fixing and maintaining the current five courses.
But China lags behind Europe and North America in the sale of construction equipment partly because prices are lower here but mainly because few smaller pieces of equipment are sold for fixing and maintaining roads and buildings.
Today, election budgets are spent fixing and maintaining current voting machines, which were purchased with money granted to local jurisdictions in the wake of the 2000 Bush-Gore election when Congress passed the Help America Vote Act.
Tumors were removed, fixed and maintained in paraffin blocks.
Embryoid bodies were fixed, washed, maintained in 30% sucrose, snap frozen in OCT and sectioned on a cryostat at 12 um thickness.
