Which type of eukaryotic regulatory proteins interacts with enhancers?

11c all three of the classes or types of eukaryotic transcriptional regulators have alpha helical structure. name any two of the three major classes of eukaryotic transcriptional regulators.

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Please compare the effect of an active enhancer at the level of RNA transcription with the effect of an active enhancer at the level of RNA splicing

Using the transcription unit diagrammed below, in which exons are represented by blue boxes and introns are represented by the connecting lines.  You discover a single base deletion in region E of this DNA sequence. Regarding transcription, this mutation will likely: 1.) Result in an alteration to the mRNA sequence. 2.)Have no effect on transcription or the mRNA sequence 3.)Prevent transcription at the TATAA box 4.) Result in an increase or decrease in the amount of mRNA transcribed