An example of convergent evolution is the similar overall body structure of sharks and dolphins. The shark is a fish while the dolphin is a mammal, but their bodies have evolved to become similar. Another example is the adaptations for gliding found in both sugar gliders and flying squirrels.Know More
While sharks and dolphins have no close family relationship in the evolutionary tree, they live in similar environments. Natural selection causes each of these species to evolve similarly. They need fins for swimming and a long sleek body to move through the water, yet sharks receive their oxygen through gills while dolphins must surface to breathe.
Sugar gliders are native to Australia, while flying squirrels are from the United States. Both animals have similar rodent bodies and skin attached between their body and forearm, allowing them to glide from trees. These two animals live in similar environments and their evolution allows them to survive using similar mechanisms.
Convergent evolution is not limited to the animal kingdom. Desert plants often evolve to develop water-holding chambers for survival in the arid region. While the plants of the American and African deserts are not closely related, they have similar evolutionary traits that have developed from separate branches of the evolutionary tree.Learn more about Biology
Biological evolution is defined as organisms reproducing but experiencing changes with each generation. Evolution can happen in a small and large context. There are small genetic changes between generations, as well as large changes that happen over multiple generations.Full Answer >
In scientific terms, evolution is both a theory and a fact. A fact refers to a scientific explanation that has been tested and confirmed often enough that there is no reason to keep looking for additional examples. Scientists accept evolution as a fact due to overwhelming evidence supporting it.Full Answer >
Mosaic evolution occurs when the gene alleles of an organism or species evolve at different rates. Marks of mosaic evolution include the development of features within a species or organism at different times.Full Answer >
Organic evolution are the events involved in the evolutionary development of a species. It means that all life descended from other life, although features may have changed dramatically along the way.Full Answer >