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Reproduction, Embryonic Development, and Aging
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During the development of embryo which of the following occur first
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A
Differentiation of cells
💡 Explanation:
Blastula differentiate into various regions and cells (blastomeres) of a particular region form a particular part of adult body, hence these areas are called presumptive areas and at this stage if cells of a particular area removed the adult lacks a particular part from its body.