00:02
Put the stage of mitosis in the correct sequence, utilize the hint provided.
00:07
So you have eight figures and you have eight blanks to fill in.
00:10
I'm going to draw as good as i can to, you know, mimic the figures, but i cannot copy and paste.
00:18
So first of all, i start from early interface.
00:22
So you will have two daughter cells that look like small and also have two nucleus.
00:28
So this is right after the cytokinesis and then it enters the early interface.
00:43
So the cell grow in size and then you can still see the nucleus, but you can see that it's animal cell.
00:51
The central sum has already been replicated.
00:55
As you can see, a lot of preparation work started to do.
01:00
The size of the cell has grown and a lot of proteins or organelles has already accumulated and being synthesized to get ready for mitosis.
01:12
Then you go through late interface.
01:22
So then after late interface, the cell goes into mitosis.
01:29
So let me move this over.
01:31
This is the late interface.
01:33
So the very first stage of actual m phase mitosis is called a prophase.
01:41
So the prophase cell, you can see that the nuclear envelope already start to break down and then you can see that chromosome condensed.
01:53
So you can see the chromosome look like x shaped because the dna replication has been finished.
01:59
You have all the condensed structure.
02:03
These are chromosome.
02:04
So the dispersed, loose chromatin become actually distinguishable chromosomes.
02:13
And then you can see the central sum are moving towards the opposite pole.
02:19
So this is prophase.
02:24
And then the late prophase, the chromosomes are being captured by mitotic spindle and they start to move inside of the cell.
02:34
And you can see that there's no nuclear envelope at all.
02:38
So this looks like this.
02:40
So you can see that the two central sum has already moved towards the opposite pole and then you have mitotic spindle that is coming out to grab the chromosome pair.
02:52
And they are not quite lined up in the middle yet, but you can see that they start to move to get there.
03:05
So this is a late prophase.
03:08
So this is chromosome movement.
03:10
They are trying to line up in the middle.
03:19
The next stage we call metaphase.
03:24
Metaphase has the most important feature of having all the chromosome lining up in the middle of the cell.
03:37
And you can see the mitotic spindle from opposite pole are grabbing the centromere and line them up...