Formation of blastula. Gastrulation Early gastrula ectoderm: blue; dorsal lip of blastopore: green...
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Formation of blastula
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Transcript of Formation of blastula. Gastrulation Early gastrula ectoderm: blue; dorsal lip of blastopore: green...
![Page 1: Formation of blastula. Gastrulation Early gastrula ectoderm: blue; dorsal lip of blastopore: green endoderm: yellow; yolk: orange.](https://reader036.fdocuments.in/reader036/viewer/2022062515/56649d2b5503460f94a00f75/html5/thumbnails/1.jpg)
Formation of blastula
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Gastrulation
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Early gastrulaectoderm: blue; dorsal lip of blastopore: greenendoderm: yellow; yolk: orange
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Mid-gastrulaBlue: ectoderm; Green: chordomesodermRed: mesoderm (ventral lip); Yellow: endoderm
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Late gastrula (yolk plug stage)Green: notochordYellow: endoderm lining the archenteron
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Formation of neural plate and early neurulation
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Neural tube stage and late neurula
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3-4 mm frog embryoFormation of brain vescicles:
prosencephalonmesencephalonrhombencephalon
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In situ hybridization
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Steps in the activationof a receptor tyrosinekinase:
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Neural Induction
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Mechanical factors which may contribute toNeurulation:
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Cadherins and cell adhesion
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Example of Cell-CellRecognition viaCadherins: