試題詳解

31.Regulation of transcription in mammalian cells
(A) altering the spacing between promoter-proximal elements or enchancers and the TATA box has been shown to have more effect on transcription from some eukaryotic promoters.
(B) some transcription factors can form heterodimers, and have less advantages to cells.
(C) DNA-binding domain and activation domain can be in different protein subunits.
(D) involves hormone receptors normally found in the nucleus.
(E) as the number of initiation-complex components bound to the promoter increases, the gel migration of the DNA-protein complex will decrease.