the cyclins and how do they function? 3-Which mechanisms cause an increase in cyclin concentration? What is a mechanism used to down-regulate cyclins?...

2-What are the cyclins and how do they function?

3-Which mechanisms cause an increase in cyclin concentration? What is a mechanism used to down-regulate cyclins?

4-What is a mechanism that operates at the G1-to-S transition and prevents the cell from replicating damaged DNA?

5-How does APC trigger the separation of sister chromatids by promoting the destruction of cohesins?