A transcription start signal is called a(n)

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A transcription start signal is called a promoter. The promoter is a specific sequence of DNA that signals the beginning of transcription and binding site for RNA polymerase. The initiation codon is the first three nucleotides in a mRNA that represents the start site for protein synthesis, while the origin is the site on a DNA molecule where replication begins. The operator is a regulatory DNA sequence that controls the expression of genes, and the nonsense codon is a stop codon that signals the end of translation.

A Transcription Start Signal Is Called A(n)