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.
Price Range. The average price of a window well cover is $734. Most people spend in the range of about $625 to $840, but the price can vary considerably. While the simplest and cheapest covers may cost just several hundred dollars, the most complex or unusual ones could cost as much as $1,300.