During which mitotic phases are duplicated chromosomes...

During which mitotic phases are duplicated chromosomes present? a. all but telophase b. prophase and anaphase c. all but anaphase and telophase d. only during metaphase at the metaphase plate e. Both a and b are correct.

Transcript

00:01 Okay, i want to say this question is talk about mitosis.

00:03 Remember that the resume or the general purpose of mitosis is to produce daughter cells that are similar to the parental cell and both of them are going to be applied.

00:13 It means both, well, all of them are going to have 46 chromosomes.

00:18 So let's suppose here you have yourself and this is your nucleus.

00:22 You're going to have one, well, two homologous chromosomes.

00:26 Because you have 23 pairs of homologous chromosomes, remember? so let's suppose this is.

00:31 Is homologous chromosome number one, and it's one.

00:35 You may see this is a pair of chromosomes number one.

00:38 Then we also have the pair number two, per number three, and up to pair number 23, okay? that is xy or x6.

00:46 So let's suppose this is per one.

00:49 So during prophase, what is going to happen is that, oh, also remember that normally these chromosomes are like this, okay, like this.

01:02 And what happens after, well, before mitosis occurs, there is a process called interface, where dna is going to be replicated and they're going to get like this.

01:14 Okay, so chromosomes like this are replicated.

01:18 So, this occurs during interface.

01:20 Also, after interface ends and mitosis occurs, prophase is going to occur.

01:28 During prophase, the nuclear envelope is going to disappear in order for these chromosomes to get into a cytoplasm.

01:34 Then during metaphase, these two chromosomes are going to align in the mitotic spindle.

01:41 That is like this.

01:42 They are going to arrange in this form.

01:49 Remember that we started as this.

01:52 It started like this.

01:53 And then the negriplicated and it came like this.

01:57 So this is going to happen during metaphase.

02:00 And during anaphase, the chromosomes are going to be splited in this way, in this way, okay, by the middle...

Question

During which mitotic phases are duplicated chromosomes present? a. all but telophase b. prophase and anaphase c. all but anaphase and telophase d. only during metaphase at the metaphase plate e. Both a and b are correct.

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