Are sharks and dolphins an example of convergent evolution?
Both dolphins and sharks swim after prey in the ocean. We know that dolphins and sharks are not closely related, and they didn’t inherit their similar body shapes from a common ancestor. Their streamlined bodies, dorsal fins and flippers are the result of convergent evolution.
Which is the best example of convergent evolution?
An example of convergent evolution is the similar nature of the flight/wings of insects, birds, pterosaurs, and bats. All four serve the same function and are similar in structure, but each evolved independently. Some aspects of the lens of eyes also evolved independently in various animals.
Why are sharks afraid of dolphins?
They know how to protect themselves. When they see an aggressive shark, they immediately attack it with the whole pod. This is why sharks avoid pods with many dolphins. Dolphins have soft skin and a flexible skeletal structure which allows them to be efficient in a fight.
What is the difference between an evolutionary reversal and convergent evolution?
Explanation: Convergent evolution is the phenomenon by which two separate species evolve a shared trait. A population diverging into two separate species while residing in the same area describes the phenomenon of sympatric speciation. A species regaining a trait is an example of evolutionary reversal.
How does convergent evolution complicate evolutionary relationships?
The major difficulty involved with convergent evolution is the formation of analogous structures. These structures may appear similar and perform similar functions, making it seem that two species are closely related.
Why does convergent evolution occur?
Convergent evolution is a process in biology. It occurs when two species from unrelated lines develop the same traits or features. This happens because they live in similar habitats, and have to develop solutions to the same kind of problems. Both species might have acquired the trait by descent from a common ancestor.
How do you know if evolution is convergent?
To observe convergent evolution in nature, evolutionary biologists seek out different organisms that show independent evolution of similar features, similar structures, or similar traits.
Which answer choice is definitely an example of convergent evolution?
An example of convergent evolution are the wings of insects, birds and bats. They all serve the same function and are similar in structure, but evolved independently.
Are eyes convergent evolution?
Therefore, the eyes of humans and octopuses have been described as a typical example of convergent evolution (Fig. 2; Brusca and Brusca 1990; Futuyma 1997).
What’s an example of divergent evolution?
Divergent evolution occurs when related species develop unique traits due to different environments or selective pressures. A classic example of divergent evolution is the Galapagos finch which Darwin discovered that in different environments, the finches’ beaks adapted differently.
Which two species are closely related but have undergone divergent evolution?
Two species that are very closely related and have undergone divergent evolution are the kit fox (Vulpes macrotis) and the Arctic fox (Vulpes lagopus).
What is another name for divergent evolution?
Divergent evolution vs. convergent evolution
| Divergent evolution | Convergent evolution |
|---|---|
| Caused by environmental changes, migration | Caused by environmental changes |
| Another name for divergent evolution is divergent selection | Also called convergence |
| Example: Darwin’s finches | Example: wings of insects, birds, and bats |
What is the difference between adaptive radiation and divergent evolution?
Explanation: 1)The adaptive radiation is a process in which the species change their forms by specifically adapting to the new niche whereas, the divergent evolution is the process by the groups of the species generally having the same common ancestor evolve and they accumulate the differences.
Are homologous structures convergent or divergent?
Analogous structures arise from convergent evolution, but homologous structures do not. Convergent evolution is the opposite of divergent evolution, in which related species evolve different traits.
How does divergent evolution occur?
What Is Divergent Evolution? Divergent evolution occurs when a population of animals or plants is split into two groups by a geographic barrier (for instance, a body of water or a migration to a new area), causing each group to develop different traits under their respective selective pressures and natural selection.
Are vestigial structures convergent or divergent?
Divergent Evolution – The evolution and accumulation of different traits between groups, which results in the formation of new species. Vestigial Structures – A structure or attribute, which is present within an organism but has lost its ancestral function.
What is the difference between divergent and convergent speciation?
Speciation is a result of divergent evolution and occurs when one species diverges into multiple descendant species. Convergent evolution occurs when species have different ancestral origins but have developed similar features.
Why are sharks and dolphins analogous?
Dolphins are mammals, and sharks are fish. However, both sharks and dolphins have evolved specific analogous traits — streamlined bodies, dorsal fins, pectoral fins and flippers — to achieve the same goal, which is to swim quickly through the ocean and catch prey.
What is analogous trait?
ANALOGOUS STRUCTURES. When animals from different groups with different ancestors live in the same habitat they can sometimes form similar structures that have a certain function. This is because of the similar way of life in their respective habitats.
What is an example of an analogous trait?
For example, the wings of a fly, a moth, and a bird are analogous because they developed independently as adaptations to a common function—flying. The presence of the analogous structure, in this case the wing, does not reflect evolutionary closeness among the organisms that possess it.
What is difference between homologous and analogous?
Homologous structures share a similar embryonic origin. Analogous organs have a similar function. For example, the bones in a whale’s front flipper are homologous to the bones in the human arm. These structures are not analogous.
What is an analogous relationship?
a similarity between like features of two things, on which a comparison may be based: the analogy between the heart and a pump. an analogous relationship.
What makes an analogy related to a simile?
While these figures of speech are used to compare different things, here are some clear rules to help you distinguish between metaphor, simile, and analogy. A simile is saying something is like something else. An analogy is saying something is like something else to make some sort of an explanatory point.