Examlex
Which one of the following causes a disease characterized by the catarrhal, paroxysmal, and convalescent stages?
Promoters
DNA sequences located upstream of a gene that initiate transcription by binding RNA polymerase and other necessary transcription factors.
Silencers
DNA sequences that can bind regulatory proteins to inhibit the expression of a gene, thus playing a crucial role in gene regulation.
Upstream Promoter Elements
Regions of DNA located before (upstream of) the coding sequence of a gene that help initiate transcription by providing binding sites for RNA polymerase and transcription factors.
Eukaryotes
Organisms whose cells have a nucleus enclosed within a nuclear envelope, making up one of the three recognized domains of life, including plants, animals, fungi, and protists.
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