In Eukaryotes,transcriptional Gene Control is Mediated By

Question

In eukaryotes,transcriptional gene control is mediated by:
A)trans-acting factors binding to cis-acting elements.
B)trans-acting factors failing to bind to cis-acting elements.
C)repressor proteins binding to operator sites.
D)metabolites binding to cis-acting elements.
E)None of the answer options are correct.

Accepted Answer

Transcriptional gene control in eukaryotes is typically mediated by trans-acting factors, such as transcription factors, that bind to cis-acting elements, such as promoters and enhancers, on the DNA. This binding facilitates or inhibits the recruitment of RNA polymerase to the gene, ultimately determining whether or not the gene is expressed. Thus, choice A is the best answer as it accurately describes this mechanism. The other options either incorrectly describe the role of trans-acting factors and/or cis-acting elements, or suggest alternative mechanisms of gene control.