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A Handbook of Biology

3. ÅÑÅPHÅSË

It is the shortest phase in the mitosis.

Centromere

of

each

chromosome

divides

longitudinally resulting in the formation of two

daughter chromatids (chromosomes of the future

daughter nuclei).

As the spindle fibres contract, the chromatids

move from the equator to the opposite poles.

4. TËLØPHÅSË



Chromosomes cluster at opposite poles and decondense into chromatin

fibres and loss their individuality.



Nuclear envelope assembles around the chromatin fibres. Thus 2

daughter nuclei are formed.



Nucleolus, Golgi complex and ER reappear. (NEET 2013)



The spindle fibres disappear.

5. ÇÝTØKÏÑËSÏS

3

2

1

It is the division of cytoplasm to form 2 daughter cells.

It starts when telophase is in progress.

Cytokinesis in animal cell: Here, a cleavage furrow

is appeared in the plasma membrane. It gradually

deepens and joins in the centre dividing the

cytoplasm into two.

Cytokinesis in plant cell: It is different from the

cytokinesis in animal cells due to the presence of cell

wall. In plant cells, It starts from the centre where the

vesicles formed from Golgi bodies accumulate at the

equator. It grows outward and meets the lateral walls.

They fuse together to form the cell-plate. It separates

the 2 daughter cells. Later, the cell plate becomes the

middle lamella between the walls of two adjacent

plant cell.