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What region of the chromosome serves as the attachment site for microtubules during Cell division?
Wiki User
∙ 12y ago
The centromeres.
Wiki User
∙ 12y ago
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What is the cytoskeletal structure that pulls chromosome apart?
The cytoskeletal structure responsible for pulling chromosomes apart during cell division is the spindle apparatus. It consists of microtubules that attach to the chromosomes and exert forces to separate them into two daughter cells. The spindle apparatus is essential for ensuring the accurate distribution of genetic material 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.
What do spindle finbers do during mitosis?
Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. At the beginning of nuclear division, two wheel-shaped protein structures called centrioles position themselves at opposite ends of the cell forming cell poles. Long protein fibers called microtubules extend from the centrioles in all possible directions, forming what is called a spindle. Some of the microtubules attach the poles to the chromosomes by connecting to protein complexes called kinetochores. Kinetochores are protein formations that develop on each chromosome around the centromere, which is a region located near the middle of a chromosome. Other microtubules bind to the chromosome arms or extend to the opposite end of the cell. During the cell division phase called metaphase, the microtubules pull the chromosomes back and forth until they align in a plane along the equator of the cell, which is called the equatorial plane. The cell goes through an important checkpoint to ensure that all of the chromosomes are attached to the spindle and ready to be divided before it proceeds with division. Next, during anaphase, the chromosomes are simultaneously separated and pulled by the spindle to opposite poles of the cell.
What is the area of a chromosome pair that attatches to a fiber stretching across the cell during cell division?
centromere
If a cell that undergoes meiosis later is four cells with chromosome numbers 17 17 18 and 16 what happened?
one of the sister chromatids in one of the two cells that was produced during the first division of meiosis did not separate during the second division resulting in one cell with an extra chromosome and one with a missing chromosome. This process is known as nondisjunction
What is the role of kinetochores and microtubules?
Kinetochore allows the attachment of chromosomes to the spindle fiber, which is made ofmicrotubules.Microtubules allowssister chromatidsto separate duringcell division.
What produces microtubules during cell division in animals?
kinetochore microtubules are located in the centrosomes and produce the microtubules
During cell division chromatin threads from the?
During cell division chromatin threads from the chromosome.
What are the functions of a microtubules?
help determine the cell shape, move chromosomes during cell division
Microtubules that extend from the poles of a cell to the centromers during cell division are called?
spindle fibers
These are barrel shaped microtubules in most animal cells that organize the spindles during cell division?
Centrioles are barrel shaped microtubules in most animal cells that organize the spindles during cell division. Centrioles are found in most eukaryotic cells.
What is the spindle?
Spindle is a grouping of fibers composed of microtubules. This grouping is very prominent during cell division.
What is the cytoskeletal structure that pulls chromosome apart?
The cytoskeletal structure responsible for pulling chromosomes apart during cell division is the spindle apparatus. It consists of microtubules that attach to the chromosomes and exert forces to separate them into two daughter cells. The spindle apparatus is essential for ensuring the accurate distribution of genetic material during cell division.
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 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.
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.
Which structure organizes the mitotic spindle during cell division?
the ikterpuschles the microtubules organize spindle fibres during mitosis and meiosis
