If the nuclear envelope didn't break down, the spindle would not attach to the kinetochore proteins on the condensed chromosomes in prometaphase because the nuclear envelope would be in the way.
The nuclear envelope breaks down during prometaphase of mitosis and prophase of meiosis. This breakdown allows the chromosomes to be released from the nucleus and prepare for the subsequent stages of cell division.
Cellular Division.
The opposite of telophase is prophase. In prophase, the genetic material condenses and the nuclear envelope breaks down, while in telophase, the genetic material decondenses and the nuclear envelope reforms.
The nuclear envelope and nucleolus are broken down and absorbed during the prophase of mitosis. This prepares the cell for the division of its genetic material.
The nuclear envelope breaks down during cell replication in mitosis to allow the chromosomes to separate properly. This breakdown occurs in prophase and is necessary for the mitotic spindle to interact with the chromosomes. After cell division is complete, the nuclear envelope reforms around the separated sets of chromosomes to reform two distinct nuclei.
Answerlate prophase (aka prometaphase)
The nuclear envelope breaks down during prometaphase of mitosis and prophase of meiosis. This breakdown allows the chromosomes to be released from the nucleus and prepare for the subsequent stages of cell division.
The nuclear envelope breaks down during the prophase stage of mitosis. This breakdown allows the chromosomes to be released into the cytoplasm for proper alignment and separation during cell division.
Cellular Division.
The nuclear membrane begins to fade during the prophase stage of mitosis, which is the phase in the cell cycle when the chromatin condenses into chromosomes and the nuclear envelope breaks down. This allows the chromosomes to be better organized for separation during cell division.
Nuclear envelope
The opposite of telophase is prophase. In prophase, the genetic material condenses and the nuclear envelope breaks down, while in telophase, the genetic material decondenses and the nuclear envelope reforms.
The breakdown of the nucleus occurs in the prophase stage of mitosis. This is when the nuclear envelope disintegrates, allowing the chromosomes to be released into the cytoplasm for subsequent division.
The nuclear envelope and nucleolus are broken down and absorbed during the prophase of mitosis. This prepares the cell for the division of its genetic material.
The nuclear envelope breaks down during cell replication in mitosis to allow the chromosomes to separate properly. This breakdown occurs in prophase and is necessary for the mitotic spindle to interact with the chromosomes. After cell division is complete, the nuclear envelope reforms around the separated sets of chromosomes to reform two distinct nuclei.
To be or not to be, that is the question.
"scientist have not discovered WHY it happens"It does not matter if scientists have discovered it or not, but the nuclear membrane disappears during PROPHASEHope this helped!!!