How they traced cats’ genes
In this genetic study of 1,100 cats, the UC Davis research team focused on:
- tracing the movement of the modern cat through the ancient world and to the Americas;
- measuring changes in genetic diversity as cats dispersed throughout the world; and
- measuring any loss of genetic diversity that might have occurred in the development of the older or more contemporary breeds.
The researchers collected samples of cheek cells from more than 1,100 cats. These cats represented 17 populations of randomly bred cats from Europe, the Mediterranean, Asia, Africa and the Americas, as well as 22 recognized breeds.
DNA samples of most breeds were obtained at cat shows or were sent in upon the lab’s request by cat owners in the United States.
The study was assisted by a host of collaborators from throughout the world. DNA, or deoxyribonucleic acid, is the hereditary material in humans, other animals and plants. It carries the instructions or blueprint for making all the structures and materials that the organism needs to function.
Genetic markers called “microsatellite markers,” commonly used for DNA profiling, were used to determine the genetic relationships of cat breeds, their geographic origins and the levels of genetic loss that have resulted from inbreeding.
— Pat Bailey