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What phase do microtubules attach to kinetochores?
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.
When does the spindle attach to the kinetochores?
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.
During mitosis microtubles attach to chromosomes at the?
kinetochores, which are protein structures found at the centromere of each chromosome. The microtubules attach to the kinetochores and help to accurately separate the duplicated chromosomes into two daughter cells during cell division.
At prometaphase of mitosis?
During prometaphase, the nuclear envelope fragments and the spindle microtubules are able to reach the chromosomes. Each of the two chromatids of each chromosome, at this point, has a kinetochore. The microtubules attach to the kinetochores, forming "kinetochore microtubules" which basically jerk the chromosomes back and forth.
During mitosis chromosomes are moved and separated through the use of spindles composed of?
microtubules. These microtubules are formed from the centrosomes and attach to the chromosomes at their kinetochores. As the microtubules shorten and lengthen, they pull the chromosomes apart, ensuring that each daughter cell receives the correct number of chromosomes.
What phase do microtubules attach to kinetochores?
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.
When does the spindle attach to the kinetochores?
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.
During mitosis microtubles attach to chromosomes at the?
kinetochores, which are protein structures found at the centromere of each chromosome. The microtubules attach to the kinetochores and help to accurately separate the duplicated chromosomes into two daughter cells during cell division.
Do microtubules in kinetochores shorten or lengthen?
disassemble
Which of the following is true of kinetochores?
Kinetochores are protein structures located at the centromere region of a chromosome. They play a key role in the attachment of chromosomes to the microtubules of the mitotic spindle during cell division. Errors in kinetochore function can lead to chromosome mis-segregation and genetic abnormalities.
In mitosis what pulls the sister chromatids apart?
During mitosis, the mitotic spindle, which is made of microtubules, pulls the sister chromatids apart. The microtubules attach to the kinetochores located on the centromere of each sister chromatid and exert force to move them towards opposite poles of the cell.
At prometaphase of mitosis?
During prometaphase, the nuclear envelope fragments and the spindle microtubules are able to reach the chromosomes. Each of the two chromatids of each chromosome, at this point, has a kinetochore. The microtubules attach to the kinetochores, forming "kinetochore microtubules" which basically jerk the chromosomes back and forth.
During mitosis chromosomes are moved and separated through the use of spindles composed of?
microtubules. These microtubules are formed from the centrosomes and attach to the chromosomes at their kinetochores. As the microtubules shorten and lengthen, they pull the chromosomes apart, ensuring that each daughter cell receives the correct number of chromosomes.
What is found in animal cells and aid in cellular reproduction?
There are a number of things. A pair of centrioles which are organizational sites for microtubules. The nuclear membrane dissolves and proteins attach to the centromeres creating the kinetochores. Microtubules attach at the kinetochores and the chromosomes begin moving. New membranes form around the daughter nuclei. The chromosomes disperse and are no longer visible under the light microscope. The spindle fibers disperse, and cytokinesis or the partitioning of the cell begins.
When do kinetochores move toward poles?
Kinetochores move toward the poles during anaphase of mitosis. This movement is driven by the depolymerization of microtubules attached to the kinetochores, pulling the chromosomes to opposite ends of the cell.
What is the molecule that allows kinetochores to walk down the kinetochore microtubules?
The molecule that allows kinetochores to 'walk' down kinetochore microtubules during cell division is dynein. Dynein is a motor protein that moves along microtubules towards their minus end, helping to transport the chromosomes towards the cell poles.
What is a function of those spindle microtubules that do not attach to kinetochores?
microtubules attached to a chromosome Wiki Answers respondents need to start answering questions with a greater sense of purpose. People do not ask questions to receive a terse, slightly correct answer. They want a valid answer to a valid question. As per this one, kinetochore microtubules are NOT just microtubules attached to a chromosome. They are microtubules attached to kinetochores on the centromeres of chromatids. Two chromatids make up a "chromosome" and each chromatid has a centromere with a kinetochore on it. When microtubules from the spindle pole attach to the kinetochores on each side of the "chromosome" the two kinetochore microtubules (from opposite poles of the cell) successfully pull the "chromosome" apart and provide each new developing daughter cell nucleus with a chromatid from that chromatid pair.
