outline 6 vi. morphogenesis a. general features …winn/bsc2011_02/lecture6.pdfoutline 6 vi....
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OUTLINE 6
VI. Morphogenesis
A. General features of gastrulation
B. Cell movement1. extension and contraction2. adhesion
C. Gastrulation in the sea urchin
D. Gastrulation in the frog
E. Three layers of cells1. ectoderm2. mesoderm3. endoderm
F. Neurulation
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OUTLINE 5
V. Animal development: patternA. Gametes
1. spermatazoan2. ovum
B. Fertilization overviewC. Details of fertilizationD. Cleavage
1. major features2. patterns
a. radialb. spiral
3. later stages of cleavagea. morulab. blastula (blastomere, blastocoel)
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Acoelomates
ProtostomesDeuterostomes
Mollusks Annelids Echinoderms ChordatesArthropods
TIME
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Fig. 32.7a
Cells NOT totipotent Cells totipotent
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Fig. 47.6Early cleavage stages
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Fig. 47.9
Gastrulation in theSea urchin
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Sea urchin fertilization and early development
QuickTime™ and aCinepak decompressor
are needed to see this picture.
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Gastrulation in the frogFig. 47.10
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Frog gastrulation (cross section)
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Fig. 47.16 Changes in cell shape during morphogenesis
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Fig. 47.11
Neurulation in the frog
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Gastrulation and neurulation in the frog
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are needed to see this picture.