00:01
To answer this question, let us first understand the given diagram.
00:04
So in this diagram we can see first phase or interface.
00:11
So in this interface, when the cell is an interface or it is also called as the late g2 phase and has already copied its dna because it is showing dna replication here.
00:24
So dna replication has been done and the chromosomes in the nucleus each consist of two connected copies called as the cystachromatids.
00:32
But here at this point the chromosomes are not very clear because they are still in their long stringy and decondensed form which we can see here in this.
00:43
The this and copy of centrosoman organally that will play a key role in this when this interface will enter into the phase of mitosis which is further divided into pro phase, metaphase, enophase and telophase.
00:59
So next is the pro phase.
01:02
Where the chromosomes paralyze or in this the cell starts to break down some structures and build others up the chromosome starts to condense and here we can see some clear chromosomal structures where here it was in a very it is in a very thread form so here it starts condensing more and more and the mitotic spindle begins to form the spindle is a structure made for microtubule strong fibers that are a part of cell skeleton and the nucleus a part of the nucleus which is here i mean this is nucleus and in this nucleus there is a small part which is called as a nucleolus so where ribosomes are made disappears and this is a sign that nucleus is getting ready to break down so next one is a metaphase in which the chromosomes align with their centrum hairs on the equator and attached to the spindle so here we can see that there is one single a plate like this on which the chromosomes come and align on a single plate which is and this plate is also called as a metaphase plate then these chromosomes enter the phase of anaphase where these chromatids of each chromosome separate into daughter chromosomes and move to the opposite poles which we can see here and these move by using these fibers which are called as the spindle fibers which are made from the microtubules.
02:38
Then this phase enters into the telophase where these chromosomes again start to decondensing and form a thread -like structure again and also the nucleus which was disappeared will start appearing again and again...