Answer: By binding to DNA it triggers the transcription of a specific gene
Step-by-step explanation: A transcription factor is a DNA-binding protein that regulates the transcription of genes in eukaryotes. This protein is required for RNA polymerase to initiate transcription in the promoter, but is not part of the enzyme.
Transcription factors are proteins that stimulate (or sometimes suppress) the transcription of a eukaryotic gene by binding to the gene promoter or an enhancer.