The primary organizer during embryonic development:
Correct answer: D. Folds inwards during gastrulation
- A. Drives cell division during cleavage
- B. Gives rise to extra embryonic tissues
- C. Secretes signaling molecules to influence the fate of other cells
- D. Folds inwards during gastrulation
Explanation
The primary organizer's role in initiating gastrulation is characterized by its ability to orchestrate the complex cellular movements that result in the folding inward of cells during embryonic development. This process is crucial for establishing the spatial organization and differentiation of tissues and organs in the developing embryo.
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About Embryonic Development
Embryonic development begins after fertilization with cleavage and formation of the morula and blastula, followed by gastrulation and the establishment of germ layers. It includes organ formation, tissue differentiation and early growth, rather than the later increase in size associated with postnatal development.
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