A precise estimate of the difference is not possible, but during interphase, chromatin may be hundreds or even thousands of times less condensed than it is during mitosis. These are diploid cells, with each cell containing a full complement of chromosomes. A. Telophase B. Anaphase C. Metaphase D. Prophase. How meiosis reduces chromosome number by half: crossing over, meiosis I, meiosis II, and genetic variation. joined at a point called the centromere, What is the stage of mitosis during which chromosomes arrive at opposite poles, decondense, and are surrounded by new nuclear envelopes? The Kidneys and Osmoregulatory Organs, 22.5. At the end of cytokinesis, two genetically identicaldaughter cellsare produced. What is this called? In meiosis II, the sister chromatids separate, making haploid cells with non-duplicated chromosomes. Actin is an important part of the cell's "skeleton" and is used in many different cellular processes that need strong fibers. Telophase is followed by cytokinesis, or the division of the cytoplasm into two daughter cells. A diploid cell with 40 chromosomes will have chromosomes and chromatids after the S phase. A) interphase B) prophase C) metaphase D) anaphase E) telophase. Explain why it is only during this phase. Cells move from meiosis I to meiosis II without copying their DNA. The nuclear membrane fragments. In what phase do chromosomes stop moving toward the poles? The two centrosomes will give rise to the mitotic spindle, the apparatus that orchestrates the movement of chromosomes during mitosis. Shortly after childbirth, nerve cells (neurons) stop reproducing. 1 Phase: 2. Note the cells are not arranged in the order in which the cell cycle occurs. Which stage brings this about? For example, if a cell was undergoing meiosis, and had a total of 4 chromosomes in it, then 2 of them would go to one daughter cell, and 2 of them would go to the other daughter cell. Microtubules rapidly assemble and disassemble as they grow out of the centrosomes, seeking out attachment sites at chromosome kinetochores, which are complex platelike structures that assemble during prometaphase on one face of each sister chromatid at its centromere. Nature Reviews Molecular Cell Biology 9, 3346 (2008) doi:10.1038/nrm2310 (link to article), Cremer, T., & Cremer, C. Chromosome territories, nuclear architecture and gene regulation in mammalian cells. You can see crossovers under a microscope as. During which stage of a cell's cycle do the replicated chromosomes line up on the equator of the cell?
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