determinant cleavages

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A successive series of cleavages that follow a specific three-dimensional pattern such that with each division, cells are produced, each of which can be shown to serve as the progenitor of a specific type of tissue. In developing mollusc eggs, for example, cell 4d, which is formed at the sixth cleavage, is always the progenitor of all primary mesodermal structures.

Subjects: Genetics and Genomics.

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