Which animal pair is an example of convergent evolution?

Which animal pair is an example of convergent evolution?

• A. The dolphin and the shark
• B. The domestic sheep and the mountain goat
• C. The polar bear and the panda bear
• D. The light-colored and dark-colored forms of the peppered moth

Answer: (A)

Convergent evolution refers to the process where organisms from different evolutionary backgrounds develop similar traits or adaptations in response to similar environmental pressures. In the case of the dolphin and the shark, both animals have adapted to a similar marine environment, leading to the development of streamlined bodies, fins, and other features that facilitate efficient swimming. Despite belonging to different classes of animals—dolphins are mammals while sharks are fish—their similarities in form and function are a classic example of convergent evolution, as both have adapted to similar ecological niches in the ocean. The other pairs represent different evolutionary relationships. The domestic sheep and the mountain goat are more examples of divergent evolution, as they share a common ancestor but have evolved different traits suited to their respective environments. The polar bear and the panda bear, although both are bears, have evolved in very different environments and have adapted to those specific habitats, making this a case of divergent evolution as well rather than converging on similar traits. The light-colored and dark-colored forms of the peppered moth illustrate a case of natural selection in response to environmental changes rather than convergent evolution, as they are variations within a single species rather than an example of two distinct lineages evolving similar traits.

Convergent evolution refers to the process where organisms from different evolutionary backgrounds develop similar traits or adaptations in response to similar environmental pressures. In the case of the dolphin and the shark, both animals have adapted to a similar marine environment, leading to the development of streamlined bodies, fins, and other features that facilitate efficient swimming. Despite belonging to different classes of animals—dolphins are mammals while sharks are fish—their similarities in form and function are a classic example of convergent evolution, as both have adapted to similar ecological niches in the ocean.

The other pairs represent different evolutionary relationships. The domestic sheep and the mountain goat are more examples of divergent evolution, as they share a common ancestor but have evolved different traits suited to their respective environments. The polar bear and the panda bear, although both are bears, have evolved in very different environments and have adapted to those specific habitats, making this a case of divergent evolution as well rather than converging on similar traits. The light-colored and dark-colored forms of the peppered moth illustrate a case of natural selection in response to environmental changes rather than convergent evolution, as they are variations within a single species rather than an example of two distinct lineages evolving similar traits.