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The process is called cytokinesis; the chromosomes are pulled through the cytoplasm to the [ready?] MTOC's - known as the Micro Tubule Organizing Centers - two per Cell, one each at each of the 'opposing' Ends. This makes the Answer to the above: i) biochemical motors; ii) cytokinetic [extremely selective] tractors; and yes there are in existence such entities as described above.
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Which period are chromosomes duplicated in?
Chromosomes are duplicated during the S phase of the cell cycle, which occurs during interphase. This is when DNA replication takes place to ensure that each daughter cell receives a complete set of chromosomes during cell division.
What form of cell division halves the number of chromosomes?
Meiosis. Takes place during gametogenesis, the formation of sperm or ova. The final sperm or ova formed will each contain 23 chromosomes, haploid number.
Where does telophase take place?
Telophase takes place in the final stage of cell division, specifically in the nucleus of the cell. During telophase, the chromosomes reach the opposite poles of the cell, the nuclear envelope reforms around them, and the chromosomes begin to decondense back into chromatin.
What happens when mondisjunctuon takes place during cell division?
Mitosis junction, or misjunction, during cell division can lead to chromosomal abnormalities, such as aneuploidy, where cells have an incorrect number of chromosomes. This can occur if sister chromatids or homologous chromosomes fail to separate properly during anaphase. The resulting cells may be nonviable or lead to conditions such as cancer or genetic disorders. Proper checkpoint mechanisms are crucial for preventing misjunction and ensuring genomic stability.
In Mitosis What organelle does the division of the nucleus?
In mitosis, the division of the nucleus is carried out by the spindle fibers. These fibers are formed by the microtubules and are responsible for separating the duplicated chromosomes into two sets in the process called cytokinesis.
What happens to cell and chromosomes during meiosis?
Cell division takes place in the cells and chromosomes line up along the center of the cell
Between which two structures does crossing-over take place during meiosis?
Crossing-over takes place between homologous chromosomes during meiosis.
Which period are chromosomes duplicated in?
Chromosomes are duplicated during the S phase of the cell cycle, which occurs during interphase. This is when DNA replication takes place to ensure that each daughter cell receives a complete set of chromosomes during cell division.
When does the reduction of chromosomes from the diploid to the haploid number take place?
The reduction of chromosomes from the diploid to the haploid number takes place during meiosis, specifically during the first division called meiosis I. In this phase, homologous chromosomes pair up and exchange genetic material, resulting in the separation of the homologous pairs into different daughter cells.
What form of cell division halves the number of chromosomes?
Meiosis. Takes place during gametogenesis, the formation of sperm or ova. The final sperm or ova formed will each contain 23 chromosomes, haploid number.
What phase of mitosis do the chromosomes replicate?
Strictly speaking, the chromosomes are not copied during mitosis but already before cell division takes place. This phase is called INTERPHASE and is again divided into three phases, G1 (first gap), S (synthesis), and G2 (second gap). The replication of chromosomes only happens in the S phase.
Where does telophase take place?
Telophase takes place in the final stage of cell division, specifically in the nucleus of the cell. During telophase, the chromosomes reach the opposite poles of the cell, the nuclear envelope reforms around them, and the chromosomes begin to decondense back into chromatin.
The period in which chromosomes duplicate?
Chromosomes duplicate during the S phase of the cell cycle, which occurs after the G1 phase and before the G2 phase. In this phase, DNA replication takes place to create identical sister chromatids that will eventually be separated during cell division.
What are chromosomes in eukaryotes composed of and formed into?
DNA is divided into several linear bundles called chromosomes, are separated by a microtubular spindle during nuclear divisionThe DNA usually divides into a number of linear bundles referred to as chromosomes that are usually separated by a microtubular spindle during nuclear division.
When does the second mitotic division occur in the egg?
The second mitotic division in the egg typically occurs after fertilization by the sperm. This division takes place once the zygote has formed and involves further division of the replicated chromosomes to generate daughter cells with the full complement of chromosomes.
What is being reduced during the reduction division of meiosis?
During the reduction division of meiosis, the chromosome number is reduced by half, from diploid to haploid. This reduction ensures that when gametes fuse during fertilization, the resulting zygote will have the correct number of chromosomes.
What process takes place during prophase?
Chromosomes are copied.
