👉 In biology and molecular biology, a homologue is a biological entity that shares a common ancestor with another organism. This means that they share a common gene pool or have similar genetic sequences, which allows them to function similarly in their respective environments. For example, a homologue of a plant might be a fruit fly, where the fruit flies share a common ancestor with plants, and thus can reproduce naturally as plants. Similarly, a homologue of an animal might be a fish, where the fish share
