Examination of a newborn child revealed a cleft in the upper lip and hard palate. What is the reason for these developmental anomalies?

Examination of a newborn child revealed a cleft in the upper lip and hard palate. What is the reason for these developmental anomalies? Violation of what mechanisms of regulation of ontogenesis took place in the onset of this pathology?

Noninfection of the upper lip and hard palate is associated with a violation of the cellular mechanisms of regulation of ontogenesis during the period of embryonic development: proliferation and differentiation of cellular material, adhesion and movement of cells, when one unpaired organ is formed from two paired primordia.

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