#6 Mitosis

Question 1

Prophase #1

Answer 1

In prophase,

• chromosomes condense and become visible
• spindle fibers emerge from the centrosomes
• nuclear envelope breaks down
• nucleolus disappears

Question 2

Metaphase #2

Answer 2

In metaphase,

• mitotic spindle is fully developed, centrosomes are at opposite poles of the cell
• chromosomes are lined up at the metaphase plate
• each sister chromatid is attached to a spindle fiber originating from opposite poles

Question 3

Anaphase #3

Answer 3

In anaphase,

• cohesin proteins binding the sister chromatids together break down
• sister chromatids (now called chromosomes) are pulled toward opposite poles
• non-kinetochore spindle fibers lengthen, elongating the cell

Question 4

Telophase #4

Answer 4

In telophase,

• chromosomes arrive at opposite poles and begin to decondenese
• nuclear envelope material surrounds each set of chromosomes
• the mitotic spindle breaks down

Question 5

Cytokinesis #5

Answer 5

In cytokinesis,

• the division of cytoplasm that occurs along with telophase.
• Animal cells: a cleavage furrow separates the daughter cells
• Plant cells: a cell plate separates the daughter cells