Mitosis

Question 1

What is the very first thing that happens in mitosis?

Answer 1

The DNA replicates + 2 chromatids are produced by each chromosome copied

Question 2

What is the first stage of mitosis? And what happens during it?

Answer 2

Prophase - the nuclear membrane dissolves, the centrioles form and the chromatids appear.

Question 3

What is the second stage of mitosis? And what happens during it?

Answer 3

Metaphase - The centrioles move to the poles of the cell, the spindle fibres organised by the centriole are attached to centromere, chromatids move to equator of the cell

Question 4

What is the third stage of mitosis? And what happens during it?

Answer 4

Anaphase - The spindle fibres contract, Chromatids are separated into chromasomes

Question 5

What is the fourth stage of mitosis? And what happens during it?

Answer 5

Telophase - basically the opposite of prophase:
-the chromosomes unwind and disappear
-nuclear envelope forms
-spindle fibres dissolve

Question 6

What happens after the last stage of mitosis?

Answer 6

Cytokinesis