Founder Effect. The Founder Effect is defined as a type of bottleneck, a type of genetic drift describing the loss of the allelic variation that accompanies founding of a new population from a very small number of individuals (a small sample of a much larger source population).
For example, two well drilling companies -- one in Pennsylvania and one that covers New Hampshire, Vermont and central Massachusetts -- state the cost for drilling a well and outfitting it with pump equipment averages between $5,000 and $7,000, at the time of publication.
When asking for a well drilling cost or estimate you will be given a standard price, one for drilling and one for the cost of steel casing. Currently on Vancouver Island, British Columbia.... the cost of drilling a well will roughly be $20.00 per foot for drilling and $20.00 per foot for casing.