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.
Currently on Vancouver Island, British Columbia.... the cost of drilling a well may average $35.00 per foot for drilling and approximately $20.00 per foot for casing. The casing will only need to be installed until water well driller hits bedrock, the 6 steel casing is used to support the over-burden material...