A shark and a dolphin have similarly shaped bodies and fins

1 answer:

4 0

The similarly shaped bodies and fins of the shark and the dolphin are a result of convergent evolution and development of analogous structures.

Explanation:

The animals can differ a lot in their appearance, or look alike a lot, but very often the looks can be deceiving when it comes to determining their relations. In some cases, some animals differ greatly in their appearance, but they are much more closely related than some organisms that look very similar to one another. A nice example of animals that look alike a lot but are not closely related are the shark and the dolphin.

The shark and the dolphin have their common ancestors hundreds of millions of years ago, thus they are anything but closely related, with the shark being a fish, while the dolphin being a mammal. The resemblance in the appearance though has been a result of a convergent evolution, or rather trying to solve the same problems, in the same environment, in the same or similar manner. Because of it, analogous structures developed, making them look very similar.

Some of the structures among the animals are:

analogous structures
homologous structures
vestigial structures

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