Homologous Structure
Homologous structure explained in an easy to understand way:
Imagine trying to use different tools like a pencil, a computer mouse, and a steering wheel — each designed for a specific task but all needing your hand to operate them. In the same way, homologous structures in different species, like a whale's fin, a bat's wing, and your arm, serve different purposes but share a common structural framework. Just as your hand adapts to grip, click, or steer, these limbs have evolved from a shared ancestral blueprint to perform unique functions, illustrating how a single foundational design can diversify to meet various needs.
Practice Version
Homologous Structure: A similar structure in different species, like a whale fin, bat wing, and your arm. Homologous structure. Homologous structures are body parts in different species that have the same basic layout but may serve different functions, showing common ancestry.