Cyclin-dependent kinase 4 and 6 are needed in this phase to cross the restriction point, where protein p53 may trigger apoptosis. Most mature nerve cells are permanently arrested in this phase, which directly follows cytokinesis. Its (*) S subphase is when DNA is replicated, while its G1 and G2 portions are devoted to cell growth. For 10 points, name this "resting phase" of the cell cycle that must be completed before mitosis can begin.
Cyclin-dependent kinase 4 and 6 are needed in this phase to cross the restriction point, where protein p53 may trigger apoptosis. Most mature nerve cells are permanently arrested in this phase, which directly follows cytokinesis. Its (*) S subphase is when DNA is replicated, while its G1 and G2 portions are devoted to cell growth. For 10 points, name this "resting phase" of the cell cycle that must be completed before mitosis can begin.
Cyclin-dependent kinase 4 and 6 are needed in this phase to cross the restriction point, where protein p53 may trigger apoptosis.
interphase (accept G1 before "S subphase" is read)