Mitosis Flashcards
G1
Gap phase #1 (1st growing phase)
M phase
Mitosis (nuclear division) and cytokinesis (cellular division)
S Phase
Synthesis phase (replicating DNA)
G2 Phase
Gap phase #2
Growing and getting ready to divide
Interphase
G1, S, G2
Prophase/Prometaphase
Chromosomes condense
Nuclear envelope breaks down
Mitotic spindle (microtubules) forms
Kinetochore (protein structure at centromere) connects chromosomes to microtubules
Centrosomes (organizing centers) form at opposite sides of cells
Metaphase
Centromeres line up at metaphase plate
Anaphase
Sister chromatids separate
Kinetochores pull chromosomes along microtubules
Telophase
Two daughter nuclei form
Cytokinesis
Cytoplasm is divided
Cell cycle control
Cyclins (fluctuating concentration) and cyclin dependent kinases (Cdks; steady concentration): regulatory proteins
Both cyclins and Cdks in high concentration: form maturation promoting factor (MPF)