Cell Cycle Regulation
REGULATION OF THE CELL CYCLE - 4/19 THE CELL CYCLE the cell reproduces by carrying out an orderly sequence of events in which it duplicates its contents and divides 2n replicate form mitotic spindle Chromosome segregation division In eukaryotes, the cell cycle is divided into four phases Interphase Restriction point I--------------------------I--------------------------I--------------------------I--------------------------I G1 S G2 M 1) Should I divide? Synthesis, 1) DNA replication Mitosis No, Can stay here DNA replication successful? Cell signaling tells it CHECKPOINT if it can divide How do cells know when to enter mitosis?