All deuterostomes go through the same initial stages of development. What are they? Using the prepared...

All deuterostomes go through the same initial stages of development. What are they? Using the prepared slide of urchin development, make a sketch of each stage.

•All chordates possess the same four structures in the early embryo. What are they? Make a sketch of the chick embryo and label these.

•What is the difference between adeuterostome, a chordate, and anamniote? Provide examples from lab of each of these. Can an animal fall into more than one of these categories? Which category or categories do humans fall into?

Expert Solution

A. The stages of deuterostomes development include-

Radial and intermediate cleavage
enterocoelous development
Formation of anal structure and mouth and organism development

Figure depicting the stages of urchin development

B) Chordates belong to phylum Chordata. The same structure present in chordates are

notochord
a dorsal hollow nerve cord
pharyngeal slits
and a post-anal tail.

Chick embryo diagram

C) Deuterostome is superphylum under which chordates belong.Amniote is the clade under phylum Chordata.

Chordates include vertebrates, reptiles, amphibians.

Amniotes are vertebrates that lay eggs on land or retain the egg within mother. Examples-reptiles, birds, and mammals.

Anamniotes- These lay the eggs in water. Example Fishes.

Yes, an animal can fall in more that one of these categories are all come under deuterostome.

Humans come under chordates, superphylum deuterostome.

gladiator answered 2 years ago

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