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What joins chromosomes arms together and is the place where spindle fibers attach to each chromosome?
Wiki User
∙ 12y ago
centromere joins chromosomes arms , the cromatids , together and is the place where spindle fibers attach to each chromosomes
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoCentromere
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What joins arms together and is the place where spindle fibers attach to each chromosome?
The sister chromatids (arms) are held together by centromeres. Centromeres are the site of attachment for the spindle fibers.
What part of the chromosome is the spindle apparatus attach?
centromere
What is the change in chromosome number in meiosis?
The Reduction of Chromosome Number in Meiosis Is Determined by Properties Built into the Chromosomes. In meiosis I, two chromatids move to each spindle pole. Then, in meiosis II, the two are distributed, one to each future gamete. This requires that meiosis I chromosomes attach to the spindle differently than meiosis II chromosomes and that they regulate chromosome cohesion differently. We investigated whether the information that dictates the division type of the chromosome comes from the whole cell, the spindle, or the chromosome itself. Also, we determined when chromosomes can switch from meiosis I behavior to meiosis II behavior. We used a micromanipulation needle to fuse grasshopper spermatocytes in meiosis I to spermatocytes in meiosis II, and to move chromosomes from one spindle to the other. Chromosomes placed on spindles of a different meiotic division always behaved as they would have on their native spindle; e.g., a meiosis I chromosome attached to a meiosis II spindle in its normal fashion and sister chromatids moved together to the same spindle pole. We also showed that meiosis I chromosomes become competent meiosis II chromosomes in anaphase of meiosis I, but not before. The patterns for attachment to the spindle and regulation of cohesion are built into the chromosome itself. These results suggest that regulation of chromosome cohesion may be linked to differences in the arrangement of kinetochores in the two meiotic divisions.
When does the spindle attaches to what structure?
the spindles attach to chromosomes and centrioles
Why is the structure responsible for the movement of chromosome during anophase?
The Centrosome. It forms Centrioles which form spindle fibers. Some of the spindle fibers attach to the Kinetochore located on the Centromere of chromosomes. The spindle fibers work in conjunction with motor proteins to facilitate disjunction.
When during mitosis do chromosomes attach to spindle fibers?
During mitosis a double-stranded chromosome attaches to a spindle fiber centromere.
What function do spindle fibers perform during cell division?
Spindle fibres attach to the centrimeres(the middle part of the chromosome which holds it together) of the chromosomes, then contract to pull them apart.
Fibers in the spindle that attach to the centromere of the chromosomes?
Fibers in the spindle that attach to the centromere of the chromosomes are called what?
When is every chromosome connected to a spindle fiber in mitosis?
Just after the nuclear membrane dissolves and once the chromosomes have cloned themselves to form two chromatids connected by a centomere. The spindle fibers then attach to each chromosome.
During metaphase the centrometers attach to what structures?
In animal cells, during metaphase stage of the cell cycle, the centrioles attach to spindle fibers. These spindle fibers are also attached to the chromosomes which are now aligned at the metaphase plate.
What is an area where the chromosome are attached?
The chromosomes are attached at their centromeres, which in turn attach to spindle fibers when being pulled apart during mitosis.
What does spindle fiber attach to?
chromosomes
Where do spindle fibers attach to chromosomes?
I am at least 70% sure that they attach to the centriole which binds the chromosome together.Centrioles do not have much to do with chromosomes. Centrioles are found just floating in the cytoplasm, while chromosomes are in the nucleus. Chromatins, strands the chromosomes are make up of, are connected by the centromere. Therefore the spindle fibers probably attach to chromosomes in the nucleus, though I, as well, am not entirely sure.
To which part of the centromere do mitotic spindle fibers attach during prometaphase?
The centromeres of chromosomes attach to the spindle fibers during metaphase. The spindle fibers bring about the separation of sister chromosomes to the opposite poles. When spindle fibers do not attach to the centromeres, the doubling of chromosomes leads to polyploidy in the cell.
What holds chromosomes together?
The centromere holds chromosomes together. It is the circle like thing in the middle of the chromosome.
What joins arms together and is the place where spindle fibers attach to each chromosome?
The sister chromatids (arms) are held together by centromeres. Centromeres are the site of attachment for the spindle fibers.
What part of the chromosome is the spindle apparatus attach?
centromere
