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If a bat, a human, an alligator, and a penguin all evolved from a common ancestor, then they should share common anatomical traits. In fact, they do. Compare the forelimbs of the human, the bat, the penguin, and the alligator. Find the humerus, radius, ulna, and carpals in each forelimb. Though the limbs look strikingly different on the outside and though they vary in function, they are very similar in skeletal structure. More significantly, they are derived from the same structures in the embryo. Structures that are embryologically similar, but have different functions, are called homologous structures. Though these animals look different, a comparison of homologous structures indicates that they are quite similar. This suggests that these animals evolved from a common ancestor.








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  1. What are the homologous body structures in birds and fish?
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Q: What is an example of homologous structures?
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Related questions

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

Homologous structures


What are structures that share a common evolutionary origin called?

Homologous Structures - California LIFE Science Prentice Hall (7th grade)


Similar structures that related species have inherited from a common ancestor are called structures?

Homologous structures.


What is homologous structures?

A structure with similar shape but a different use


Two species have homologous structures what do these homologous strcutures show about the evolutionary relationship between the two species?

The presence of homologous structures (for example, the bone structure in chimpanzee arms, human arms, and whale flippers) indicates that the species sharing that homologous structure share a common ancestor.


What Similar structures that related species inherited from a common ancestor are?

Homologous structures.


How would you use homologous structure in a sentence?

I learned about homologous and heterozygous structures in Biology.


What is a term that describes body parts of different organisms that are similar in form?

Homologous structures (Not to be confused with Homologous pairs)


What structures have been shared by related species and have been inherited from a common ancestor?

what is Similar structures that related species have inherited from a common ancestor


Compare homologous and analogous structures?

Homologous structures are structures that indicate a related evolutionary ancestry, not just similarity. For example, the flipper of a whale, the wing of a bird, and the arm of a a human are similar in their bone structure. Analogous structures are structures that are similar in appearance and function but are not the result of shared ancestry. For example, the wings of a birds and insects have the same function, but they do not reflect a shared ancestry.


How are analogous and homologous structures different?

They are different because homologous structures have the same structure, but serve a different function. Like mammal arms(human, bat and whales). Analogous structues are different structures, but serve the same function. For example, bat wings and butterfly wings.


How is the idea of common descent supported by example of homologous structures?

this question is to hard cant find it