Kibble for Thought: Dog diversity prompts new evolution theory
By Christen Brownlee, 15:51 PM April 15, 2008
The wide range of variety in domesticated dogs—from the petite Chihuahua to the monstrous mastiff—has powered a new view of what drives evolution.
Scientists have long known that the evolutionary changes that alter a species' appearance or create new species frequently occur in rapid bursts. One widely accepted theory holds that any evolutionary change results from a random switch of a single genetic unit within DNA.
These single-point mutations occur in about 1 out of every 100 million DNA si...
Source URL: https://www.sciencenews.org/article/kibble-thought-dog-diversity-prompts-new-evolution-theory