Explanation:
All animals are eukaryotic, multicellular organisms, and almost all animals have specialized tissues. Most animals are motile, at least during certain life stages. Animals require a source of food to grow and develop. All animals are heterotrophic, ingesting living or dead organic matter.
When AncestryDNA launched in 2012, we compared your DNA against 22 possible regions. We now have more than 1,500.
the key element in the ecological concept of species is that individuals within a species can successfully interbreed and conceive healthy offspring
