Cell Cycle and Cell Division

Cell Cycle

Interphase

• During interphase, the nucleus has a normal appearance.
• The cell carries out its normal cellular functions.
• The cell increases all of its components.

Mitosis

• A nuclear division process.
• New nuclei receive the same number of chromosomes as the parental nucleus.

Cytokinesis

• A process where the cytoplasm divides.
• Results in the production of two daughter cells.

Meiosis

• Nuclear division in sexually reproducing organisms.

Cell Cycle Stages

G1 Phase

• Cell cycle's main checkpoint.
• If DNA is damaged, apoptosis (programmed cell death) will occur.
• Cell growth takes place.

S Phase

• Cell growth continues.
• DNA replication occurs.

G2 Phase

• Growth continues.
• Final preparation for division/mitosis.
• Mitosis occurs if DNA has replicated properly.

M Phase

• Mitosis occurs.
• Spindle assembly checkpoint.
• Mitosis will not occur if chromosomes are not properly aligned.