Cells at the end of prophase, when viewed under the microscope, do not show golgi complexes, endoplasmic reticulum, nucleolus and the nuclear envelope.
Which of the following statements about the events occurring during prophase of mitosis is NOT correct?
Correct answer: C — Nuclear envelope, nucleolus, and Golgi complex remain distinctly visible throughout prophase.
The core concept tested here is the characteristic events of prophase in mitosis. Statement A is correct as prophase is marked by the initiation of condensation of chromosomal material. Statement B is correct as the duplicated centrosome moves towards opposite poles during prophase. Statement D is also correct as centrosomes radiate asters which, along with spindle fibres, form the mitotic apparatus. Statement C is incorrect because, as per NCERT, cells at the end of prophase, when viewed under the microscope, do not show Golgi complexes, endoplasmic reticulum, nucleolus, and the nuclear envelope; these structures disappear. Therefore, they do not remain distinctly visible throughout prophase.
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