They both contain skeletal bones.
Jointed phalanges.
Limbs.
they have a similar bone structure and they all have a common ancestor.
It is a flipper, which is a modified wing that penguins use to swim underwater.
Both the bird's wing and the seal's flipper are adapted for swimming, however they have different bone structures. The bird's wing contains long, lightweight bones with hollow spaces, while the seal's flipper has shorter, denser bones. The bird's wing has feathers for flight, while the seal's flipper is covered in skin to streamline movement in water.
Scientist think that both bird's wings and a seal's flipper have the same ancestors.
Preadaption, that is, the development of new features through the refinement of existing ones
That the birds and seals probably have the same ancestors.
Homologous bones in a dolphin's flipper, a bird's wing, and a dog's leg share a common structural framework despite their different functions. These bones, such as the humerus, radius, and ulna, demonstrate a similar arrangement and composition, reflecting their evolutionary origins from a common ancestor. This similarity illustrates how diverse species adapt their skeletal structures to suit various environments and modes of locomotion, while maintaining fundamental anatomical features.
The similarity in bone structure between the wing of a bat and the flipper of a whale suggests that bats and whales share a common evolutionary ancestor. This phenomenon is known as homology, where different species exhibit similar anatomical features due to descent from a shared ancestor, despite having evolved in different environments and for different functions. It highlights the concept of convergent evolution, where unrelated species develop similar traits as adaptations to their environments.
Front Wing was created in 2000.
That the birds and seals probably have the same ancestors.