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The chromosomes get aligned at the equat...

The chromosomes get aligned at the equator during

A

prophase

B

metaphase

C

anaphase

D

telophase

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks during which phase of cell division the chromosomes align at the equator of the cell. 2. **Identifying the Cell Division Phases**: The main phases of cell division (mitosis) are prophase, metaphase, anaphase, and telophase. 3. **Defining the Metaphase**: In metaphase, chromosomes are aligned along the metaphase plate (equatorial plane) of the cell. This is a crucial step in ensuring that each daughter cell will receive an identical set of chromosomes. 4. **Role of Spindle Fibers**: During metaphase, spindle fibers attach to the centromeres of the chromosomes, helping to align them at the equator. 5. **Conclusion**: The chromosomes get aligned at the equator during the metaphase of cell division. 6. **Final Answer**: The answer to the question is option B, which corresponds to metaphase. ---
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Knowledge Check

  • Assertion: Metaphase II begins with splitting of centromere of each chromosome into two. Reason: In Anaphase II chromosomes align at the equator.

    A
    If both assertion and reason are true and reason is the correct explantion of assertion
    B
    If both assertion and reason are true but reason is not the correct explnantion of assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.
  • Chromosomes are in their most extended form during:

    A
    interphase
    B
    anaphase
    C
    metaphase
    D
    prophase
  • The number of chromosomes is reduced to half during

    A
    mitosis
    B
    meiosis iII
    C
    Meiosis involves pairing of non-homologous chromosomes and recombination between them.
    D
    fertilisation.
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