During prophase, the nuclear membrane dissolves. It reforms during telophase. Explain why this action Is important for cell division.

During cell division, the dissolution and reformation of the nuclear membrane are crucial processes that facilitate the proper segregation of chromosomes and the eventual formation of two daughter cells. Here's why these actions are important:

Importance of Nuclear Membrane Dissolution in Prophase

1. Chromosome Access: The dissolution of the nuclear membrane during prophase allows the spindle fibers to access the chromosomes. This is essential for the alignment and separation of chromosomes.
2. Spindle Fiber Attachment: Without the breakdown of the nuclear envelope, spindle fibers would not be able to attach to the kinetochores on the chromosomes, which is necessary for their movement and segregation.

Importance of Nuclear Membrane Reformation in Telophase

1. Chromosome Protection: Reformation of the nuclear membrane during telophase encloses the separated sets of chromosomes, protecting them and allowing the cell to return to its normal state.
2. Cellular Organization: The reformation of the nuclear envelope helps re-establish the nucleus as a distinct entity within the cell, which is crucial for the resumption of normal cellular functions post-division.

Final Answer

The dissolution of the nuclear membrane in prophase is essential for spindle fibers to access and segregate chromosomes, while its reformation in telophase ensures the protection and organization of the newly formed daughter nuclei, facilitating successful cell division.