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The goal of cell reproduction is to produce 2 “daughter cells” that are IDENTICAL to the parent cell.
Cells are identical because the chromosomes replicate (copy) before division.
Each daughter cells gets a copy of each chromosome.
This is called Mitosis
Respiration Division of the nucleus
CELL DIVISION: Mitosis + Cytokinesis Mitosis : Is the division of the nucleus . The chromosomes are copied (replicated) and then split into 2 groups . Cytokinesis : Is the division (separation) of the Cytoplasm. The cell divides .
Prophase Metaphase Anaphase Telophase
Prophase Metaphase Anaphase Telophase DNA condenses (coils together) and the chromosomes become visible Nuclear membrane disappears Doubled chromosomes get thick and become short Nuclear membrane disappears
Double chromosomes get thick and become short
Nuclear membrane disappears
Prophase Metaphase Anaphase Telophase Chromosomes line up in the m iddle of the cell ( equator ) Chromosomes connect to the spindle fibers
2. M etaphase
Chromosomes line up in the m iddle of the cell ( equator )
Prophase Metaphase Anaphase Telophase Chromosomes copy, split, and separate
Just like animal cells, plant cells reproduce through cell division but they do not make the same kind of daughter cells. In plant cells a cell plate forms instead of a cleavage furrow before the cell splits in half. The cell membrane divides the cell, the cell plate becomes the cell wall and two daughter cells form on each side of the wall.
What happens when cells cannot control themselves?
Cells divide and divide.
Uncontrolled cell division causes cancer.
Cancer is the uncontrolled division of body cells.
Cells divide too much and form tumors.
Cells with tumors cannot do their job and “push” out other cells