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How many layers are present in gastrulation

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Embryology lab assignment:

1. What type of yolk distribution is most likely found in human egg cells?

2. How many layers (germ layers) of cells are present in the blastula?

3. How many layers are present in gastrulation?

4. What structure forms the primitive gut?

5. How would you structurally distinguish a fertilized egg from an unfertilized egg?

6. In what ways are these structures (frog blastula and frog gastrula) similar to that of the sea star (starfish)? In what ways are they different to that of the sea star? (E.g. Where is the blastocoel located, and what is its shape?)

1. Differentiate between ovum, morula, blastula and gastrula.

2. Discuss neurulation and state the significance

3. Describe the functions of the extra-embryonic membranes.

4. List tissue that results from each germ layer.

5. How would you differentiate between a pre-metamorphic, prometamorphic, and a metamorphic tadpole?

Reference no: EM132676572

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