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They are the result of slight changes in the genetic information that produces them.
Due basically to their common ancestry. Evolution just builds on the past and does not innovate when it can tinker, So, the closer the ancestry is the closer the skeletal arrangement will be.

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Cullen Fay

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3y ago

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Continue Learning about Zoology

Do reptiles have bones?

Yes they do. They have many little bones in their body which makes up a skeleton Yes they do... they have a skeleton similar to most animals - ie - they have a skull, spine, rib-cage and limbs.


Why do many vertebrates have to same kinds of bones arranged a little differently?

Many vertebrates share similar bone structures due to evolutionary conservation, where common ancestors have passed down these traits through generations. This similarity in bone arrangement, despite variations in size and shape, allows for the adaptation to different environments and lifestyles. The basic skeletal framework provides essential functions like support and movement, while modifications enhance survival in diverse habitats. Thus, while the arrangement may differ, the underlying genetic and developmental pathways remain consistent across species.


Why do many vertebrate 's have the same kinds of bones arranged a little differently?

Many vertebrates share similar bone structures due to their common evolutionary ancestry, which has led to the conservation of certain skeletal features over time. This phenomenon is known as homology, where similar bones (like the forelimbs of humans, whales, and bats) have evolved to serve different functions in different species. The variations in bone arrangement reflect adaptations to specific environments and lifestyles while maintaining the underlying structural framework. This adaptability showcases the versatility of vertebrate skeletal designs in response to evolutionary pressures.


Does a crocodile have bones?

Yes, frogs have a backbone. They are called vertebrates.


How have scientists been able to infer the relationship between the major groups of Vertebrates?

scientist have been able to infer the relationships between the major groups of vertebrates by bones