00:01
You know, let's answer this question.
00:01
Let's talk about a sale division, okay? remember that the cell cycle, in the cycle, you're going to have the g1, you're going to have the s phase, the g2, and then the m phase, okay? but there is one more stage here that is called the g0.
00:23
Okay, so practically in g1 and in g2 what happens is that the organelles are going to replicate, are going to increase in size, and also there is going to be a, increase of protein synthesis in order to get ready to get into the mitosis stage.
00:38
During the s phase, dna replication occurs.
00:41
So after all of this happens and mitosis occurs and myosis ends, you're going to produce two dorses, okay? two dorses that are identical to the parental cell, this in case of mitosis.
00:54
So depending on the tissue that you are right now, the cell can go immediately into g1 again, into s, g2 and m again, and so on.
01:06
Okay, but some cells are going to enter into this latent phase that is called g0.
01:14
In this g0, the cell is not going to, it's not going to be in this cycle particularly, and it is going to be resting or sleeping, something like that.
01:23
It is not going to be replicating or it is not going to be preparing for replicating.
01:29
Depending again on the tissue that you are talking about, these cells are going to be permanent in this g0 for example neurons and neurons get permanently into g0 and this is why you cannot or neurons cannot undergo mitosis but other cells for example skin cells can get into g0 and they can exit g0 easily okay so it depends on the tissue that you're talking about where where that cell is going to permanently get into g0 and never exit again or the cell can get into g0 and exit easily from there.
02:08
So this question said, are all human cells capable of mitosis and cell division? so the answer for this question is no because some cells remain in g0 and they cannot exit there in order to continue the cell cycle and enter mitosis...