Mitotic phase

Question 1

-How much % does this take
-what 2 phases taken place, and what exactly do they do
-what 4 phases does mitosis consist of?
-how is DNA arranged to prepared for motosis?

Answer 1

-10%
1. mitosis: division of genetic material in 4 stages
2. cytokinesis- division of cytoplasm and organelles into 2 identical cells
-Prophase, Metaphase, Anaphase, Telophase
-arrnaged in long strands of chromatin

Question 2

1. Prophase
   -what is it and what happens
   -what happens to the nuclear membrane
   -what do centrosomes do

Answer 2

-first phase of cell division where the sister chromatids from visibile by shorterning and thickening to form chromosomes
-dissapears
-centrosomes seperate and move to opposite poles

Question 3

2. Metaphase
   -chromosomes are ______
   -what do the sister chromatid pairs do
   -where are centrosomes, and what do they form

Answer 3

-visible
-they align themselves along the equatorial plate of the cell
-at opposite poles, the microtubules form spindle firbres which attach to the sister chromatids

Question 4

3. Anaphase
   -what happens to the centromeres and chromatids
   -what are the chromatids now called
   -what do the microtubules do
   -what do chromosomes start to do

Answer 4

-split, chromatids seperate
-daughter chromosomes
-pull seperated chromosomes to opposite centrosomes
-uncoil their DNA

Question 5

4. Telophase
   -where are the daughter chromosomes now, and what do they do here
   -what happens to the spindle fibres, and what forms again?

Answer 5

-on opposite poles of the cell and lengthen to form chromatin (like original first cell)
-dissolve and a nuclear membrane forms again

Question 6

Cytokinesis (known as what)
-in animal cells, what happens
-in plant cells, what happens

Answer 6

-in animal cells,CLEVAGE FURROW: center pinches until cell becomes 2 equal halves
-in plant cells, CELL PLATE forms in the middle and moves outward ti form a cell wall