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Multiple Choice
Which of the following events occur during prophase of mitosis?
A
The cell membrane pinches in to divide the cytoplasm.
B
Chromosomes condense and become visible.
C
The nuclear envelope re-forms around each set of chromosomes.
D
Sister chromatids are pulled apart to opposite poles.
Verified step by step guidance
1
Understand that mitosis is a process of cell division that results in two genetically identical daughter cells.
Recognize that prophase is the first stage of mitosis, where several key events occur to prepare the cell for division.
During prophase, chromosomes condense and become visible under a microscope. This is a crucial step as it allows the chromosomes to be easily separated later.
Note that the nuclear envelope does not re-form during prophase; this occurs during telophase, the final stage of mitosis.
Remember that the cell membrane pinching in to divide the cytoplasm, known as cytokinesis, occurs after mitosis, and sister chromatids are pulled apart during anaphase, not prophase.