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Read the following statement and choose ...

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.

A

A, B & C

B

Only B

C

Only A

D

Only A & B

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each of the statements provided and determine their correctness. ### Step-by-Step Solution: 1. **Evaluate Statement 1**: "Spindle fibres get attached to the kinetochore of the chromosomes during metaphase." - During metaphase, the spindle fibers indeed attach to the kinetochores of the chromosomes. This is a crucial step for proper chromosome alignment and separation during cell division. - **Conclusion**: This statement is **correct**. 2. **Evaluate Statement 2**: "At the end of prophase, cells do not show Golgi complex, endoplasmic reticulum, nucleolus and the nuclear envelope." - During prophase, the cell prepares for division. The Golgi complex and endoplasmic reticulum undergo fragmentation, and the nucleolus and nuclear envelope disassemble. This allows the spindle apparatus to access the chromosomes. - **Conclusion**: This statement is **correct**. 3. **Evaluate Statement 3**: "At anaphase, centromere splits but chromatids do not separate." - In anaphase, the centromeres do split, and the sister chromatids are pulled apart towards opposite poles of the cell. Therefore, the statement that chromatids do not separate is incorrect. - **Conclusion**: This statement is **incorrect**. ### Final Conclusion: - Statements 1 and 2 are correct, while statement 3 is incorrect. Therefore, the correct option is that A and B are correct. ### Answer: The correct option is **D (A and B)**. ---
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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.

Knowledge Check

  • At the end of which phase, when cells viewed under the microscope, do not show Golgi complexes, endoplasmic reticulum, nucleolus and nuclear envelope?

    A
    Telophase
    B
    Prophase
    C
    Metaphase
    D
    Anaphase

  • Choose the correct statements with respect to the completion of prophase I. Chromosomal material condenses to from compact mitotic chromosomes. Chromosomes are seen to be composed of two chromatids attached together at the centromere. II. Initiation of the assembly of mitotic spindle, the microtubules, the proteinaceous components of the cell cytoplasm III. Cells at the end of prophase, when viewed under the microscope, do not show golgi complexes, endoplasmic reticulum, nucleolus and the nuclear envelope

    A
    I only
    B
    II only
    C
    I and II
    D
    I, II and III

  • Read the following statements and select the correct option stating which ones are true (T) and which ones are false (F) in metaphase I spindle fibre attaches to homologus chromosome white in metaphase II attaches to chromatids. Chromosome completely decondenese in telophase I. Blvalent is fromed at leptotene stage level become clearly visible in zygotene stage Diakinesis represents transition to metaphase I.

    A
    T-F-F-T
    B
    T-T-F-F
    C
    T-F-T-T
    D
    F-T-F-T

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