Both mitosis and meiosis are forms of cell division that...

Both mitosis and meiosis are forms of cell division that produce daughter cells containing genetic information from the parent cell. (a) Describe TWO events that are common to both mitosis and meiosis that ensure the resulting daughter cells inherit the appropriate number of chromosomes. (b) The genetic composition of daughter cells produce by mitosis differs from that of the daughter cells produced by meiosis. Describe TWO features of the cell division processes that lead to this genetic variation.

Transcript

0:00 Hi everyone.

00:01 So this question is asking us to find out the similarities between these two processes and the two processes are meiosis and mitosis.

00:09 So now coming on to their similarities.

00:12 So these two processes are going to have the common stages or the common steps, okay, such as the interface, which is the longest or the resting phase of the cell cycle.

00:22 So the first step would be the interface that is common among these two.

00:26 So this interface is going to include what? so this interface is going to include what? so this interface is.

00:30 Going to include a given phase okay synthesis phase or the s face in which the dna duplication would occur but the chromosome number is going to be the same and the g2 phase okay now coming on to the next phase so the next phase would be the pro phase so that is common among these two pro phase then the meta phase anaphase so next is the anna face and another one is the telophase so another one is the telophase so also, cytokinesis would also occur in these two processes.

01:05 So these are the stages that are common in between these mitosis and the mucis.

01:12 Also, both of these processes occurs in the plants as well as animals.

01:18 So that is another common thing between these two.

01:22 So these can occur in the plants as well as animals.

01:26 Also we can say that they are going to produce the new cells.

01:29 And cells undergo the dna replication that would occur in the s phase.

01:33 And they have the same basic steps.

01:36 So we have already discussed the common steps between the meiosis and the mitosis.

01:41 Now, we are going to discuss that what is going to happen in the meiosis, the two basic features of the cell division that leads to the genetic variation.

01:51 We know that recombination is going to happen in the meiosis.

01:55 So now we are going to discuss what, the meiosis.

01:58 So in the moses, we are going to discuss the prophase.

02:04 So that is the longest phase or the longest stage in the mucis.

02:10 For example, we are discussing miosis 1.

02:12 So if we talk about the miosis 1, so there are different stages and those stages are the leptotine that would include in the pro phase.

02:23 So first is the leptotine stage.

02:25 So the first stage is the leptotine.

02:30 The second stage would be zygotein.

02:33 The third stage would be packetine.

02:37 The fourth stage would be diplotene.

02:41 So the fourth one is the diplotene.

02:44 And the fifth stage would be the dichinesis.

02:48 So this would be the fifth stage.

02:50 So that is the dichinesis.

02:52 So these steps would come under one.

02:56 So these steps are going to come under the prophase 1.

03:01 Okay.

03:02 So we are going to discuss the two features.

03:04 So that would lead to the genetic variation.

03:07 So something is going to happen in the meiosis 1...

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