AP BIOLOGY

Detailed explanation-1: -Although all dogs are descendants of the wolf, the use of artificial selection has allowed humans to drastically alter the appearance of dogs. For centuries, dogs have been bred for various desired characteristics, leading to the creation of a wide range of dogs, from the tiny Chihuahua to the massive Great Dane.

Detailed explanation-2: -An example of artificial selection-Dog breeding Domestication is the act of separating a small group of organisms (wolves, in this case) from the main population, and select for their desired traits through breeding.

Detailed explanation-3: -The size, shape, and behavior of the modern domesticated dog has been sculpted by artificial selection for at least 14, 000 years. The genetic substrates of selective breeding, however, remain largely unknown.

Detailed explanation-4: -Both agree that natural selection favored wolves that were bold and friendly. They also agree that bold and aggressive wolves would be killed and therefore unable to breed. This allowed the bold and friendly dogs to breed, which was a key to the eventual evolution into dogs.

Detailed explanation-5: -Artificial selection provides a model that helps us understand natural selection. It is a small step to go from humans selecting desirable traits in plants and animals to envisioning natural conditions acting selectively on populations and causing natural changes, especially over geological timescales.