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.Continue Reading
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
The four roles of proteins are to help provide structure, transport other molecules around the body, facilitate essential biochemical reactions in the body and act as channels for the passage of important molecules to and from the cells. The broad protein types are enzymes and structural, transport and channel proteins.Full Answer >
Serial homology is the development of special features from a structure that occurs in each section of an organism's body. A common example of serial homology is the specialized limb structure of arthropods. Each section of an arthropod body has a pair of appendages. These appendages can develop in the embryo as legs, wings or feelers.Full Answer >
An example of homozygous recessive phenotype would be a red-flowered pea plant. The white-flowered pea plant expresses the dominant phenotype.Full Answer >
An example of an endothermic animal would be a dog and an ectothermic animal would be a snake. Endothermic animals must generate their own heat to stay warm and ectothermic animals can warm up using outside sources like the sun.Full Answer >