Examples of transcriptional, post - transcriptional gene expression control in eukaryotes.?

ap bio -HELP ??? 6 EXAMPLES :)Examples of transcriptional, post - transcriptional gene expression control in eukaryotes.?
%26gt;The expression of genes is regulated by the processes that affect the rate at which gene products are synthesised and degraded .





%26gt;Much of this regulation occurs at level of transcriptional initiation ,mediated by regulatory proteins that either repress transcription (negative regulation) oe activate transcription (positive regulation) at specific promoters.





EUKARYOTE=





%26gt;In eukaryote ,positive regulation is more common than negative regulation, and transcription is accompanied by large changes in chromatin structure.





1%26gt;eukaryotic gene expression can be regulated by intercellular and intracellular signals.





2%26gt;regulation can result from phosphorylation of nuclear transcriptional factors.





3%26gt;many eukaryotic mRNA are subject to translational repession.





4%26gt;posttranscriptional gene silencing is mediated by RNA interference.





5%26gt;Regulatory proteins.Examples of transcriptional, post - transcriptional gene expression control in eukaryotes.?
Think about how the lac operon works.