=In this stage the nuclear envelope breaks down so there is no longer a recognizable nucleus. Some mitotic spindle fibers elongate from the centrosomes and attach to kinetochores, protein bundles at the centromere region on the chromosomes where sister chromatids are joined. Other spindle fibers elongate but instead of attaching to chromosomes, overlap each other at the cell center.=
"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!!!
The phase of mitosis that begins when the nuclear membrane starts to fade is called prometaphase. During prometaphase, the nuclear membrane breaks down, allowing the spindle fibers to attach to the chromosomes.
The correct chromosomal condition at prometaphase of mitosis is when the chromosomes are fully condensed and aligned along the metaphase plate in preparation for segregation. Each chromosome consists of two sister chromatids held together by a centromere. The spindle fibers are attached to the kinetochores on each sister chromatid to ensure proper separation during anaphase.
During prometaphase, the nuclear envelope breaks down, allowing the chromosomes to be released from the nucleus. The nuclear membrane disappears, leading to the chromosomes being able to interact with the mitotic spindle fibers for proper alignment and separation during cell division.
Chromosomes attach to spindle fibers during metaphase of mitosis. This attachment ensures that the chromosomes are properly aligned at the metaphase plate before they are separated and pulled to opposite poles of the cell during anaphase.
"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!!!
The spindle attaches to the kinetochores during prometaphase, where the microtubules from the spindle apparatus interact with the kinetochores on sister chromatids. This attachment is essential for proper chromosome alignment and segregation during cell division.
No, prometaphase is a stage in mitosis, not meiosis. In meiosis, there is a prophase I stage that is similar to prometaphase in mitosis.
The phase you are referring to is called prometaphase. During prometaphase, the microtubules attach to the kinetochores at the centromere of each chromosome, allowing them to move and align properly along the metaphase plate in preparation for separation during anaphase.
The phase of mitosis that begins when the nuclear membrane starts to fade is called prometaphase. During prometaphase, the nuclear membrane breaks down, allowing the spindle fibers to attach to the chromosomes.
Microtubules attach to kinetochores during the prometaphase stage of cell division. This attachment is essential for the proper alignment and segregation of chromosomes during mitosis.
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.
This subphase is known as prometaphase in mitosis. During prometaphase, the nuclear envelope breaks down, allowing the spindle fibers to interact with the condensed chromosomes. This is a critical stage for the proper alignment and separation of chromosomes during cell division.
The correct chromosomal condition at prometaphase of mitosis is when the chromosomes are fully condensed and aligned along the metaphase plate in preparation for segregation. Each chromosome consists of two sister chromatids held together by a centromere. The spindle fibers are attached to the kinetochores on each sister chromatid to ensure proper separation during anaphase.
prometaphase
Microtubules attach to kinetochores during prometaphase of mitosis, forming the mitotic spindle apparatus. This attachment is crucial for proper chromosome alignment and segregation during cell division.
During prometaphase, the nuclear envelope breaks down, allowing the chromosomes to be released from the nucleus. The nuclear membrane disappears, leading to the chromosomes being able to interact with the mitotic spindle fibers for proper alignment and separation during cell division.