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What is a function of those spindle microtubules that do not attach to kinetochores?
Wiki User
∙ 15y ago
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.
Wiki User
∙ 13y ago
Wiki User
∙ 9y ago1. Explain how genetic variability arises from:
· random mutation
· crossing over
· independent assortment (shuffling) of homologues
· fusion of gametes.
Kinetochore also known as centromere is present in each chromosome. During metaphase, spindle fibers get attached to the kinetochore and during anaphase, the chromosomes are pulled apart by this assembly.
Wiki User
∙ 15y agomaintaining the region of overlap of fibers in the cell's center
Wiki User
∙ 13y agothey elongate the cell during anaphase.
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What does kinetochore do?
they are microtubles, they move the chromosomes to the equasion (metaphase plate) of the cell. they also make up the spindle fibers.
Which of the following is true of kinetochores?
They are sites at which microtubules attach to chromosomes.
In mitosis what pulls the sister chromatids apart?
The spindle fibers. The spindle fibers that attach to the sister chromatids are called called chromosomal microtubles.
Where do microtubules attach to chromosomes during mitosis?
kinetochore microtubules bind with spindle fibers.
What is responsible for moving chromosomes during mitosis?
The mitotic/meiotic spindle originating from the centrosomes and composed of microtubule subunits. Kinetochores provide the motive power.Read more: What_structure_is_responsible_for_moving_the_chromosomes_during
When does the spindle attach to the kinetochores?
Prometaphase
What does kinetochore do?
they are microtubles, they move the chromosomes to the equasion (metaphase plate) of the cell. they also make up the spindle fibers.
Which of the following is true of kinetochores?
They are sites at which microtubules attach to chromosomes.
In mitosis what pulls the sister chromatids apart?
The spindle fibers. The spindle fibers that attach to the sister chromatids are called called chromosomal microtubles.
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.
Where do microtubules attach to chromosomes during mitosis?
kinetochore microtubules bind with spindle fibers.
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.
What is responsible for moving chromosomes during mitosis?
The mitotic/meiotic spindle originating from the centrosomes and composed of microtubule subunits. Kinetochores provide the motive power.Read more: What_structure_is_responsible_for_moving_the_chromosomes_during
The phase of mitosis in which microtubules connect the centromere of each chromosome to the poles of the pindle?
The name for the network of microtubules along which the chromosomes move during cell division is called the spindle fibers. These spindle fibers attach to the chromosomes and pull them in half.
What phase do chromosomes attach to spindle fibers?
In metophase and anaphase of the cell cycle.
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 form to help attach and move chromatids to the opposite poles of the cell?
Spindle Fibers
