stages of mitosis

Question 1

name the 4 stages of mitosis

Answer 1

prophase
metaphase
anaphase
telophase

Question 2

explain what happens during the prophase of mitosis (5 marks)

Answer 2

1. chromatin coils and condenses to form chromosomes
2. nuclear envelope disintegrates
3. nucleolus disintegrates
4. centrioles move to poles of the cell
5. centrioles produce spindle fibres

Question 3

explain what happens during the metaphase of mitosis (2 marks)

Answer 3

1. spindle fibres attach to centromeres
2. chromosomes line up on equator of the cell

Question 4

explain what happens during the anaphase of mitosis (2 marks)

Answer 4

1. chromosomes are pulled apart at the centromere by spindle fibres
2. then the chromosomes move to opposite poles of the cell
   (Evidence: v shape)

Question 5

explain what happens during the telophase of mitosis (5 marks)

Answer 5

1. chromosomes detach from spindle fibres
2. spindle fibres disappear
3. chromosomes uncoil and become chromatin
4. nucleolus reforms
5. nuclear envelope reforms