Chapter 12 (mitosis)

Question 1

prophase

Answer 1

1) chromosome condensation
2) migration of centrosomes towards poles (lengthen with polymerization)
3) asters position/anchor the mitotic spindle

Question 2

prometaphase

Answer 2

-centrosomes migrated to opposite poles
-breakdown of nuclear envelope (gives mitotic spindles can access chromosomes)
-Kinetochore microtubules are still trying to make attachments
-Non-kinetochore microtubules are overlapping and lengthening the cell

Question 3

metaphase

Answer 3

alignment of fully condensed chromosomes at metaphase plate

Question 4

Anaphase

Answer 4

two kinds of movement)
A) chromosomes pulled towards spindle poles (kinetochore microtubules depolymerize)
B) non-kinetochore microtubules (lengthen and polymerize)

Question 5

telophase and cytokinesis

Answer 5

-Daughter chromosomes become less compact once they hit poles
-nucleolus forming
-mitotic spindle disassembles
-reformation of nuclear envelope (sequesters and have daughter chromosomes)