According to reproductive isolation all the varieties of dogs are one species. Thus, this statement is true.
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What is speciation?</h3>
Speciation is the process by which a new species emerges through evolution. A species is a collection of creatures that can breed with one another and generate fertile offspring while remaining reproductively separated from other organisms.
When it comes to reproductive isolation, horses and donkeys are not the same species because their offspring are unable to reproduce.
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