Teddy dog is one of our favorite pet dog breeds, especially famous for its furry and lovely appearance. And why does Teddy dog have white hair on its roots? The following will be analyzed from genetics and variety history.
2. The genetic basis of Teddy dog.
Teddy dog's autosome consists of 39 pairs of chromosomes, of which 38 pairs are autologous chromosomes and the other pair is sex chromosomes. The coat color of Teddy dogs is regulated by genes. Teddy dog also has a gene called TYRP 1, which belongs to tyrosinase family. It is an enzyme in pigment cells, in which melanin is synthesized. Some variants of this gene are classified as black and brown and various dispersed pepper and salt methods, but they are not white.
On the other hand, the coat color of Teddy dogs is also related to the synthesis of viologen. Teddy dogs can produce two different types of melanin particles, true melanin and brown melanin, and their colors cancel each other out, thus producing different color combinations. For example, if a dog has both eumelanin and brownish melanin, its hair will appear brown; If a dog only has true melanin, its hair will appear black, and white because brown melanin is not expressed.
3. The influence of variety history
The breeds of Teddy dogs were developed by breeders in Germany and France today. They crossed a water hound with a bear badger, and further bred the offspring into today's Teddy dog. In this process, the breeder finally selected the dog with good performance for offspring breeding, and gradually revealed the specific appearance characteristics of Teddy dog.
Among them, Baigen is considered to be the product of Teddy dog breed history, because Baigen can make the overall color of the dog more balanced, harmonious and look more lovely. Therefore, in the breeding process of Teddy dog breeds, the white hair on the roots has gradually become a standard.
4. Summary
Because of heredity and breed history, the root hair of Teddy dogs is usually white. Although this feature conforms to the general appearance characteristics of Teddy dogs, it is actually the result of deliberate selection by breeders in order to achieve aesthetics, harmony and conformity with breed standards.