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.
From Wikipedia, the free encyclopedia. The Shetland Sheepdog, often known as the Sheltie, is a breed of herding dog. They are small to medium dogs, and come in a variety of colors, such as sable, tri-color, and blue merle. They are vocal, excitable, energetic dogs who are always willing to please and work hard.oday it is raised as a farm dog and family pet. They were originally a small mixed-breed dog, often 10â13 inches (250â330 mm) in height and it is thought that the original Shetland herding dogs were of Spitz type, and were crossed with collie-type sheepdogs from mainland Britain.