'Anal tail' diaporamas de présentation

AP Biology

AP Biology. Evolution Chapters 22-25. Chapter 22. Evolution. Evolution : the change over time of the genetic composition of populations

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Biology 340 Comparative Embryology Lecture 2 Dr. Stuart Sumida

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Marine Fishes

Marine Fishes. Read Chapter 9 Pages 154- 178. Chordates. All chordates have (at least during some period of their life) Dorsal nerve cord Gill slits Notochord Post-anal tail These are the 4 basic characteristics of all chordates. Bridging the gap Chordates w/o backbone. Tunicates

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Marine Fishes

Marine Fishes. Read Chapter 9 Pages 154- 178. Chordates. All chordates have (at least during some period of their life) Dorsal nerve cord Gill slits Notochord Post-anal tail These are the 4 basic characteristics of all chordates. Bridging the gap Chordates w/o backbone. Tunicates

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Phylum Chordata

Phylum Chordata. Deuterostome development Dorsal hollow nerve cord from ectoderm Notochord Stiff rod between nerve cord & intestine Support for muscular movements Pharyngeal gill slits Slits allow water to escape before stomach Post-anal tail. Phylum Chordata. Subphylum Urochordata

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Phylum: Chordata

Phylum: Chordata. By Ned McCrady and John McCormick. Chordates. Defining Characteristics: Coelomates that have a notochord; a dorsal, hollow nerve cord; pharyngeal slits; and a muscular, post anal tail. Other Characteristics. All organisms in this phylum are deuterostomes .

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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

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