BIOL 111 Lecture Notes - Lecture 16: Prometaphase, Metastasis, Metaphase
Document Summary
One copy of the origin is now at each end of the cell: replication finishes. The plasma membrane grows inward, and new cell wall is deposited: two daughter cells result. S ince prokaryotes preceded eukaryotes by billions of years. C heckpoints at each phase: where the cell cycle stops until a go ahead signal is received, at the g 1 checkpoint, the cell goes on to the s phase if a signal is given. If no signal is given, the cell exits the cell cycle and goes into g0, a non- dividing state! C yclin-dependent kinases (c dks: both fluctuate during the cell cycle; mpf (c dks) peak when cyclin peaks, synthesis of cycling begins in late s phase and continues through g2. Mpf"s activity peaks during metaphase: during anaphase, the cyclin component of mpf is degraded as the chromatids are being pulled apart, terminating the m phase.
