Final answer:
The rabbit breed described is the Himalayan rabbit, known for its unique coloration and temperature-sensitive pigment.
Step-by-step explanation:
The breed of rabbit defined as a popular show breed, which is also used for meat and fur, and is one of the 11 breeds with defined markings is the Himalayan rabbit. This breed is medium to large in size and is known for its unique coloration, which includes a white body with colored points on the ears, nose, tail, and feet, much like Siamese cats.
The Himalayan phenotype is caused by a temperature-sensitive gene, where a specific allele leads to pigment production only in the cooler extremities of the rabbit's body. The characteristics of the Himalayan rabbit align with biological concepts of natural selection and evolution, where rabbits in cold environments like the Arctic would benefit.
This selection for white fur is a natural process that enhances survival and reproductive success. In contrast, in a rocky environment, gray and Himalayan rabbits may be at an advantage for camouflage reasons, illustrating an example of diversifying selection.