You are watching: When do chromatids line up at the equator of a cell
During metaphase, spindle fibers affix to the centromere of every pair that sister chromatids. The sisters chromatids line up at the equator, or center, the the cell. The spindle fibers ensure that sister chromatids will separate and also go to various daughter cells as soon as the cabinet divides.
During anaphase, sister chromatids separate and also the centromeres divide. The sisters chromatids room pulled personal by the shortening the the spindle fibers. This is like reeling in a fish by shortening the fishing line. One sister chromatid move to one pole of the cell, and also the other sister chromatid moves to the opposite pole. At the end of anaphase, every pole of the cell has actually a complete collection of chromosomes.
During telophase, the chromosomes start to uncoil and kind chromatin. This prepares the genetic material for directing the metabolic tasks of the brand-new cells. The spindle additionally breaks down, and new nuclear membrane form.
Cytokinesis is the final stage the cell division in eukaryotes and prokaryotes. Throughout cytokinesis, the cytoplasm splits in two and also the cabinet divides.
Type the cell division in i m sorry the variety of chromosomes is reduced by fifty percent and four haploid cell result
The atom envelope starts to rest down, and the chromosomes condense. Centrioles start moving to opposite poles that the cell, and also a spindle starts to form. Importantly, homologous chromosomes pair up, which is distinct to prophase I. In prophase of mitosis and meiosis II, homologous chromosomes do not kind pairs in this way.
Spindle fibers connect to the paired homologous chromosomes. The combine chromosomes line up along the equator the the cell. This occurs only in metaphase I. In metaphase of mitosis and meiosis II, that is sister chromatids that line up along the equator of the cell.
Spindle fibers shorten, and also the chromosomes of every homologous pair begin to different from each other. One chromosome of each pair moves towards one pole the the cell, and also the other chromosome moves toward the the opposite pole.
The spindle breaks down, and new nuclear membranes form. The cytoplasm of the cabinet divides, and also two haploid daughter cells result. The daughter cells each have actually a arbitrarily assortment of chromosomes, v one from every homologous pair. Both daughter cells go on to meiosis II.
The atom envelope breaks down and also the spindle starts to kind in every haploid daughter cell from meiosis I. The centrioles also start to separate.
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The spindle breaks down, and new nuclear membranes form. The cytoplasm ofeach cabinet divides, and four haploid cells result. Each cell has a unique combination of chromosomes.