Population Genetics. Population genetics is a field of biology that studies the genetic composition of biological populations, and the changes in genetic composition that result from the operation of various factors, including natural selection.
Walls, known locally as Waas, (Old Norse: Vagar = Sheltered Bays (voes) - the Ordnance Survey added the ll as they thought it was a corruption of walls. Cf Vagar vÃ¡gar And vagur vÃ¡gur In The), faroe islands is a settlement on the south Side Of, West Mainland shetland Islands. in scotlandne of its old names is  Vagaland , hence the name of the local poet. A pier was built at Walls in the 18th century, and from 1838, it was a center for fish curing. Walls itself is a quieter place than once it was.
Over the course of the year, the temperature in Shetland typically varies from 37Â°F to 59Â°F and is rarely below 30Â°F or above 63Â°F. The warm season lasts for 82 days, from June 24 to September 14, with an average daily high temperature above 55Â°F. The hottest day of the year is August 6, with an average high of 59Â°F and low of 52Â°F. The cool season lasts for 133 days, from November 26 to April 8, with an average daily high temperature below 46Â°F.