Mitosis and Meiosis - EG

Cell cycle

process during which parent cell gives rise to daughter cells

Phases of cell cycle

1. interphase

2. M phase

3. cytokinesis

Phases of interphase

1. G1 phase

2. S phase

3. G2 phase

Phases of M phase

1. prophase

2. prometaphase

3. metaphase

4. anaphase

5. telophase

Where does mitosis occur?

somatic cells

What occurs during mitosis?

single mother cell produces 2 daughter cells

• daughter cells are identical to mother cell

What does meiosis involve?

involves specialized cells → sperm and egg cell

What occurs during meiosis?

single mother cell produces 4 daughter cells

• daughter cells are NOT identical to mother cell

G1 phase

• mother cell grows in size

• duplicates its cellular components

S phase

• DNA synthesis

• centrosome duplicate

G2 phase

continues to grow in size and prepare for M phase

G0 phase

non-dividing phase

Interphase

S phase

• DNA synthesis

Why is cell division important?

allows organism to repair tissues and grow

• and reproduce

When does independent assortment occur?

during meiosis I

• increases genetic variation