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Cell Cycle and Cell Division question

2023 · Q75
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Cell Cycle and Cell Division question

2023 · Q75

NEETBiologyCell Cycle and Cell DivisionMCQ+4 / −1

Select the correct statements.

A. Tetrad formation is seen during Leptotene.

B. During Anaphase, the centromeres split and chromatids separate.

C. Terminalization takes place during Pachytene.

D. Nucleolus, Golgi complex and ER are reformed during Telophase.

E. Crossing over takes place between sister chromatids of homologous chromosome.

Choose the correct answer from the options given below:

  1. A
    B and D only
  2. B
    A, C and E only
  3. C
    B and E only
  4. D
    A and C only
View written solutionFree

Correct answer: A

  1. Tetrad formation is seen during the Zygotene stage : During the Zygotene stage of Prophase I in meiosis, homologous chromosomes pair up, forming tetrads or bivalents.



2. During Anaphase, the centromeres split and chromatids separate : In Anaphase, the centromeres divide, and the sister chromatids are pulled apart towards opposite poles of the cell.



3. Terminalization of chiasmata takes place during Diakinesis : Diakinesis is the final stage of Prophase I in meiosis. During this stage, terminalization occurs, which is the process in which chiasmata, the points of crossing over between non-sister chromatids, move toward the ends of the chromosomes.



4. Nucleolus, Golgi complex, and ER are reformed during Telophase : During Telophase, the nuclear envelope starts to reassemble around the separated chromosomes, and the nucleolus, Golgi complex, and endoplasmic reticulum (ER) are reformed.



5. Crossing over takes place between non-sister chromatids of homologous chromosomes : This process occurs during the Pachytene stage of Prophase I in meiosis, leading to the exchange of genetic material between the non-sister chromatids, which increases genetic diversity in the resulting gametes.

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