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Though the forelimb of your cat or dog does not look much like your arms these are homologous structures that are almost identical bone for bone. This shows the common ancestry of all tetrapods and the closer common ancestry of you and your mammal pets.

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12y ago

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Both homologous and analogous forms of these result from evolution?

Structures


Is a wing of a bird homologous to the wing of a cat?

In biology, homologous structures are defined as structures which serve the same purposes because they evolved from the same source (divergent evolution), the opposite of analogous structures, which serve the same purpose but evolved through convergent evolution. Birds' wings and bats' wings are both homologous and analogous. As wings, the two are analogous, but as forelimbs, the two are homologous.


How Does Homologous Structures Disapprove Evolution?

They don't, Homologous structures, such as the bones in your forearms and the bones in your cat's and dog's forelegs are that similar because you and your pets are mammals and closely related on the evolutionary tree. Before modern genetic showed this to be convincing the study of morphology was showing us pretty much the same thing; homologous structures support evolution.


How do homologous structures among animals provide evidence for evolution?

Homologous structures among animals are similar body parts that suggest a common ancestry. These structures provide evidence for evolution because they indicate that different species share a common evolutionary history and have evolved from a common ancestor.


What is homologous structures?

A structure with similar shape but a different use


How are homologous structures different from analogous structures?

Yes, homologous structures have common bone and muscle structures suggesting that they came from an common ancestor while analogous structures do not share any similarity in features, suggesting that they derived from two separate origins.


What is an explanation of why bird wings and reptile forelegs are evidence of evolution?

Homologous structures indicate a common ancestor


How is homologous vs analogous structures a part of evolution?

My spidey senses are telling me to tell you to look in your book.


How are homologous evidence for evolution?

Homologous structures are evidence for evolution because they indicate that different species share a common evolutionary ancestor. These structures have similar underlying anatomical or genetic features, suggesting a shared evolutionary history. For example, the bones in the limbs of vertebrates all share a common anatomical structure, indicating a shared evolutionary origin.


What are structures that have different functions in different species but develop from the same embryonic tissue?

Homologous structures are anatomical structures that share a common evolutionary origin, but may have different functions in different species. These structures develop from the same embryonic tissue and demonstrate evolutionary relationships between species. An example is the forelimbs of vertebrates, which have different functions such as wings in birds, flippers in whales, and arms in humans.


What importance are homologous structures to the study of evolution?

Learning that the flipper of a whale is really just like your upper arm.


Similarity of structure of the forelimb of a bird and a mammal is an example of what evidence?

Homologous structures - the forelimb structures are anatomically similar and were derived from a common ancestor; however, they have evolved completely different uses. This provides evidence for divergent evolution or adaptive radiation.