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Which of the following events takes plac...

Which of the following events takes place during anaphase stage of mitosis
I. Spindle fibres attach to kinetochores of chromosomes
II. Centromeres split and chromatids separate
III. Chromatids move to opposite poles
IV. Nucleolous, Golgi complex and E.R. reform

A

I and II

B

II and III

C

III and IV

D

I and IV

Text Solution

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The correct Answer is:
B
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Centromeres split, chromatids separate and move to opposite poles during

Assertion: During anaphase, centromere of each chromosome splits and chromatids separate. Reason: During anaphase, chromatids move to opposte poles.

Answer the following questions regarding the events carried out in the labelled parts of the ab ove given diagram. (1) DNA synthesis occurs in (2) Condenstaion of chromosomal material takes place in (3) Attachement of spindle fibres to kinetochores of chromosomes during (4) Initiation of the assembly of mitotic spindle during (5). Splitting of centromere and separation of chromatids in (6) Movement of chromatids to opposite poles during (7) Reformation of nucleolus, Golgi complex and ER occurs in (8) Alignment of chromosomes along metaphase plate during (9) During of cytoplasm during (10) Preparation of cell division takes place during.

During which phase the centromere splits and chromatids move toward the opposite poles by the shortening of spindle fibers attached to centromeres ?

Name the stage of cell cycle at which one of the following events occur: (i) Chromosomes are moved to spindle equator (ii) Centromere splits and chromatids separate (iii) Pairing between homologous chromosomes takes place (iv) Crossing over between homologous chromosomes takes place

Read the following statement and choose the correct option spindle fibres get attached to the kinetochore of the chromosomes during metaphase. At the end of prophase cells do not show golgi complex, endoplasmic reticulum, nucleolus and the nuclear envelope. At anaphase centromere splits but chromatids do not separate.

The key events shown by the telophase is/are I. Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements. II. Nuclear envelope assembles around the chromosome clusters III. Nucleolus, golgi complex and ER reform

Which of the following events are not characteristic features of telophase A. Cchromosome material condensess to form compact mitotic chromosomes B. Nucleolus, Golgi complex and ER reform C. Nuclear envelope assembles around the chromosome clusters D. Centromeres split and chromatids separate E. Chromosomes cluster at opposite, spindle poles and their identify as discrete elemetns is lost.

ARIHANT NEET-CELL CYCLE AND CELL DIVISION-Chapter Exercises (C) Medical entrances gallery (collection of questions asked in NEET & Various medical entrance exams)
  1. In a diploid cell, at which stage of cell cycle, the amount of DNA is ...

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  2. Assertion- Meiosis-II is similar to mitosis. Reason- Meiosis-I canno...

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  3. Which of the following events takes place during anaphase stage of mit...

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  4. Identify the correct stage in cell division with its characteristics. ...

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  5. The complex formed by a pair of synapsed homologous chromosomes is cal...

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  6. Name the stage of mitosis in which chromosomes are arranged on the equ...

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  7. During gamete formation, the enzyme recombinate participates during

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  8. The substance which causes doubling of the chromosome is called

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  9. Synaptonemal complex is formed during

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  10. Select the correct option with respect to mitosis

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  11. The phragmoplast is organised at the

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  12. Select the corret matches (a) S-phase - DNA replication (b) Zygot...

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  13. The stage between two meiotic divisions is called

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  14. How many chromosomes will the cell have at G(1),after S and after M-ph...

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  15. Chromatid formation takes place in

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  16. Longest phase of meiosis is

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  17. Which of the protein is found in spindle fibres?

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  18. Which stages of cell division do the following figures A and B represe...

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  19. During meiosis I, the bivalent chromosomes clearly appear as tetrads d...

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  20. Which phase comes in between the G(1) and G(2) phase of cell cycle. Or...

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