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What evidence indicates that vertebrates and play nonvertebrate chordates evolved from a common ancestor?
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The number and location of bones of many fossil vertebrates are similar to those in living vertebrates Most biologists would probably explain this fact on the basis of a the needs of the organisms?
No, b) a common ancestor.
Why do humans and chicks develop similarly to reptiles?
because of a common ancestor of all vertebrates in Pre-Cambrian period, scientists says that they all will have a common development stage.
What does progenitor mean?
a direct ancestor of somebody or something
Do animals have limbs?
No, not every animal has a backbone. Only animals that belong to the phylum Chordata have backbones, while insects and mollusks do not.
What is the Oligohippus?
an ancestor of the horse
Do chordates and echinoderms have a common ancestor?
yes
How does paedogenisis relate to the evolution of vertebral chordates?
Evolution of chordates is based on pedogenetic theory i.e. primitive chordate ancestor evolved from echinoderm by pedogenesis .
The fundamental likeness of body structure in all vertebrates indicates that these organisms probably originate from?
The body structure in all vertebrates indicated that these organisms originated from Precambrian times. This has to due with having a back bone.
Where did the lateral line system first show up in chordate history?
The Tunicate in larva form are possibly the earliest link between chordates and their non vertebrate ancestors. The lancelet that have a notochord that persist through out development are possibly the oldest ancestor of the modern vertebrates.
What does the presence of homologous structure in different organisms suggest?
The presence of homologous structures, such as the vertebral column in vertebrates, suggests the presence of a common ancestor. Learn more at 23andme.com.
What is most likely similar to a common ancestor of all vertebrates?
jawless fish
How are birds related to mammals?
Mammals and birds are both vertebrates descended from an early reptilian ancestor.
The presences of some similar structures in all vertebrates suggests that these veterbrates are?
descended from a common ancestor
What is suggested by the similarity of early embryos of different species of vertebrates?
evolution from a distant common ancestor
Why do vertebrates share a common ancestor?
Vertebrates share a common ancestor because they all descended from a single, ancestral species that had a backbone. Over time, this ancestral species diversified into the many different types of vertebrates we see today through the process of evolution and natural selection.
The number and location of bones of many fossil vertebrates are similar to those in living vertebrates Most biologists would probably explain this fact on the basis of a the needs of the organisms?
No, b) a common ancestor.
Which is an ancestor of terrestrial tetrapod vertebrates whale shark hagfish coelacanth or actinopterygian fish?
we do not know yet it has not ben dicoverd
