Transcript Cell Division: all cells come from pre-existing cells

Cell Division: all cells come from preexisting cells
2 Types of Division
1. Mitosis: cell division which
produces 2 diploid, identical cells
2. Meiosis: cell division which
produces 4 haploid cells
Cell Life Cycle
1. Interphase:
G1, S, and G2
G = growth
S = Synthesis
2. M phase:
mitosis –
nuclear
division
3. Cytokinesis:
cytoplasm
division
Interphase
1. Interphase: DNA not
visible
-nucleus still intact
Phases of Mitosis
2. Prophase:
chromosomes become
visible
-nucleus disintegrates
Phases of Mitosis
3. Metaphase:
chromosomes connect
at the centromere to
spindle fibers
-line up at the
equatorial plate
Phases of Mitosis
4. Anaphase: spindle
fibers recede
-pull chromosomes
apart
-chromosomes retreat
to opposite ends
Phases of Mitosis
5. Telophase: nucleus
reforms
Cytokinesis splitting
the cell
-2 daughter cells are
formed