Which of the following does not occur during mitosis?

Spindle formation
Condensation of the chromosomes
Breakdown of the nuclear membrane
Replication of the DNA

The correct answer is D. Replication of the DNA.

Mitosis is a type of cell division that results in two daughter cells that are genetically identical to the parent cell. It is a fundamental process in all living things, and it is essential for growth, development, and repair.

The steps of mitosis are:

  1. Prophase: The chromosomes condense and become visible. The nuclear envelope breaks down.
  2. Metaphase: The chromosomes line up in the middle of the cell.
  3. Anaphase: The chromosomes are pulled apart by the spindle fibers.
  4. Telophase: The chromosomes decondense and the nuclear envelope reforms. The cell divides into two daughter cells.

DNA replication does not occur during mitosis. It occurs during interphase, which is the period of time between cell divisions. During interphase, the cell grows and prepares for division. DNA replication occurs during the S phase of interphase.

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