QUESTION 7 At the beginning of mitosis which of the...

QUESTION 7 At the beginning of mitosis which of the following is FALSE? a. DNA has not yet duplicated b. duplicated DNA is attached at the centromere c. the chromosomes are condensing to help in conditioning d. the duplicated DNA is called sister chromatids e. the centrosome has duplicated QUESTION 8 Which phase of meiosis II is more like mitosis. Why? a. homologous chromosomes are being separated b. sister chromatids are pulling apart c. going from diploid to haploid d. the mitotic spindle is séparating from the centrioles in meiosis II e. recombination is occurring QUESTION 9

Transcript

00:01 Hello, so welcome to again this video.

00:04 Welcome to this video and this is a video that focuses on cell division processes.

00:13 Cell division processes is in a cell.

00:17 It's a question that deals with mitosis and my uses and i know very well that you know what these two of processes are in details and you know the difference.

00:34 Between the two at a stage right so we'll quickly let's go through the questions we have two questions here question number seven which i might call a or seven it's a mitosis question and requires us to give a false statement out of possible five at the beginning of mitosis which of the following is false so which of the statements is false about mitosis process and we're given one that dna has not a duplicate no dna duplication no dna duplication b we give in so this a this b we are told duplication of dna is attached at the centromere so dna attached to centromere c is chromosome c is chromosome is condensin so condensing chromosomes condensing i hope you're following chromosome chromosome d we're given duplication duplicated dna is called sister chromatids so we have a phenomenon of sister chromatids and e we have central mass duplicated so we have a concept of central med duplication you need to know that when during mitosis as a question at the beginning of diagnosis of the statement is false.

02:30 Definitely it will be a because before mitosis begins dna ought to have replicated.

02:39 So we don't consider a as our answer.

02:43 So question 7 answer is a.

02:45 Because before the mitotic division of chromosome, all dna has replicated if you have a single dna strand these will have replicated to another strand of dna all right so before cell division occurs this dna has must have replicated in the s phase this occurs at the s face of division s phase is in this s phase i hope you know that he says face where dna replication takes place before entering s -face, of course, each chromosome contains one chromatid, one chromatid before cells enter s -face.

03:43 But after dna replication in this phase, each chromosome has two sister chromat.

03:49 So we have two sister chromatids which align at the pore of the cell...

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