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← Life Sciences & MedicineWhat happens to a differentiating stem cell's gene expression profile when transcription factors activate lineage-specific genes?
A)Maintains broad pluripotency gene expression
B)Upregulates telomerase gene expression exclusively
C)Represses pluripotency gene expression gradually✓
D)Increases expression of metabolic housekeeping genes
💡 Explanation
Stem cell differentiation involves a carefully orchestrated shift in gene expression. Activation of lineage-specific genes represses the genes maintaining pluripotency via epigenetic mechanisms, because differentiation is mutually exclusive with pluripotency; therefore, the expression of pluripotency genes decreases, rather than continues or remains unchanged.
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