The answer is in the doggie DNA. Many scientists are just as curious as you about what makes dogs look the way they do, or in other words, how the genes in dog DNA are expressed as a phenotype. Just like us, dogs inherit genetic information from their doggie dad and mom. 19 авг. 2011 г.
What makes dogs different from each other?
Dogs began to be bred for specific purposes that relied on their appearance, agility, size, form, and more. This caused dogs to start looking very different from one another. Nowadays, we mostly refer to this process as "selective breeding".
How do dogs get their patterns?
Pigments are produced in cells called melanocytes, and the distribution and number of these cells are determined by the dog's genetic makeup. These cells pass the pigment onto the dog's hair, skin and eyes, and create the pattern and color.
What causes different breeds?
Most evolutionary biologists distinguish one species from another based on reproductivity: members of different species either won't or can't mate with one another, or, if they do, the resulting offspring are often sterile, unviable, or suffer some other sort of reduced fitness.
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