5 Describe the roles of GAP and GEF in activating GTPases?

1. Draw a simplified model of a cis-regulatory element with multiple trans-acting factors up-regulating gene expression. Your simplified model must include: a double-stranded DNA molecule labeled with its appropriate orientation (3' and 5', etc.), an area of DNA highlighting the gene of interest to be transcribed, a highlighted area showing the promoter region, one cis-regulatory element upstream of the promoter with its specific transcription factor • RNApol + a general transcription factor + a TATA binding protein all bound to the appropriate area (think about where these bind before transcription starts), an upstream enhancer with its transcription factor bound to it, • and finally the TSS. All parts must be labeled and in the correct area to earn full credit. **I suggest using different colors for this drawing problem**.

What are the contrasting roles of trithorax and polycomb group complexes during development in animals and plants?

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.