The distinct characteristics of different cell types in a multicellular organism result mainly from the differential regulation of the

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The regulation of gene transcription, specifically the differential transcription of genes transcribed by RNA polymerase II, is what leads to the specific characteristics of different cell types in a multicellular organism. This is due to the fact that different cell types require different proteins to carry out their specialized functions, and therefore different genes must be transcribed and translated in each cell type. Replication of specific genes, transcription of housekeeping genes, and binding of proteins to the TATA box are all important for gene expression, but they do not directly contribute to the distinct characteristics of different cell types.

The Distinct Characteristics of Different Cell Types in a Multicellular