From the sequencing of the human genome, we believe that there are approximately 21,000 protein-coding genes in the genome, of which 1500-3000 are transcription factors.If every gene has a tissue-specific and signal-dependent transcription pattern, how can such a small number of transcriptional regulatory proteins generate a much larger set of transcriptional patterns?

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The Answer of From the sequencing of the human genome, we believe that there are approximately 21,000 protein-coding genes in the genome, of which 1500-3000 are transcription factors.If every gene has a tissue-specific and signal-dependent transcription pattern, how can such a small number of transcriptional regulatory proteins generate a much larger set of transcriptional patterns?

From the Sequencing of the Human Genome, We Believe That