Mitosis

Question 1

Prophase:

Answer 1

Chromosomes condense and become visible
Spindle fibers emerge from the centrosomes
Nuclear envelope beaks down
Nucleolus disappears

Question 2

Prometaphase:

Answer 2

Chromosomes continue to condense
Kinetochores appear at the centromeres
Mitotic spindle microtubules attach to kinetochores
Centrosomes move towards opposite poles

Question 3

Metaphase:

Answer 3

Mitotic spindle is fully developed, centrosomes ae at opposite poles of the cell
Chromosomes are lined up at the metaphase plate
Each sister chromatid is attached to a spindle fiber origination from opposite poles.

Question 4

Anaphase:

Answer 4

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 5

Telophase:

Answer 5

Chromosomes arrive at opposite pole and begin to decondense
Nuclear envelope material surrounds each set of chromosomes
The mitotic spindle breaks down

Question 6

Cytokinesis:

Answer 6

In animal cells: a cleavage furrow separates the daughter cells
Plant cells: a cell plate separates the daughter cells