ANP cell division.

mitotic phase

1 cell divides into 2 (1-2 hrs)

G1

growth and normal metabolic roles

S phase

DNA replication (6-8 hrs)

G2

growth and prep for mitosis

what does G2 synthesize and correct; time

synthesizes extra organelles, membranes, and enzymes; corrects DNA replication (4-6 hrs)

prophase definition

chromosomes become visible and nucleus starts to break down

metaphase definition

Chromosomes line up in the middle of cell

anaphase

chromosomes are pulled apart to opposite sides

telophase

2 new nuclear membranes form to split the cell

meiosis I

DNA exchange for genetic diversity

meiosis II

creates genetic diversity

prophase I

chromosomes pair up and swap DNA

metaphase I

pairs of chromosomes line up in the middle

anaphase I

Paired chromosome separate and move to opposite sides of the cell

telophase I

2 new nuclei form and the cell splits into 2 separate cells

prophase II

chromosomes condense again in new cells

metaphase II

chromosomes line up in the middle

anaphase II

sister chromatids are pulled apart

telophase II

4 new cells form each with half the number of chromosomes