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

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



(a) replication of specific genes.
(b) transcription of genes transcribed by RNA polymerase II.
(c) transcription of housekeeping genes.
(d) proteins that directly bind the TATA box of eukaryotic genes.


Answer: B


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