Essay Meiosis: Homologous Chromosomes

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Meiosis

Meiosis is the process of cell division in sexually reproducing organisms that reduces the number of chromosomes in reproductive cells from diploid to haploid, leading to the production of gametes in animals and spores in plants. There are four stages of meiosis. The first is Prophase. Prophase is when homologous chromosomes form tetrads and cross over and mitotic spindle travels to opposite polls. The second stage is Metaphase. Metaphase is when tetrads line up at center and chromosome attach to spindle fibers. The third stage is Anaphase. Anaphase is when homologous chromosomes seperate. The last stage is Telophase. Telophase is when cell forms two haploid cells. At first all eukaryote cells divided using a process called mitosis. But about 1.4 billion years ago, some eukaryote cells developed the ability to reproduce using meiosis instead. Meiosis is a way for cells to get more diversity while they are reproducing. A cell that reproduces by meiosis has twice as much DNA in its nucleus as cells do if they reproduce only by mitosis. It has two copies of all its DNA - one copy from its mother, and one copy from its father.When one of these cells reproduces, first each of these long DNA molecules, or chromosomes, build copies of themselves out of proteins,staying attached at the middle they way they do during mitosis. So then the cell has four copies of each DNA molecule that it needs. jufibacisvbfusahc

 Meiosis

Meiosis is the process of cell division in sexually reproducing organisms that reduces the number of chromosomes in reproductive cells from diploid to haploid, leading to the production of gametes in animals and spores in plants. There are four stages of meiosis. The first is Prophase. Prophase is when homologous chromosomes form tetrads and cross over and mitotic spindle travels to opposite polls. The second stage is Metaphase. Metaphase is when tetrads line up at center and chromosome attach to spindle fibers. The third stage is Anaphase. Anaphase is when homologous chromosomes seperate. The last stage is Telophase. Telophase is when cell forms two haploid cells. At first all eukaryote cells divided using a process called mitosis. But about 1.4 billion years ago, some eukaryote cells developed the ability to reproduce using meiosis instead. Meiosis is a way for cells to get more diversity while they are reproducing. A cell that reproduces by meiosis has twice as much DNA in its nucleus as cells do if they reproduce only by mitosis. It has two copies of all its DNA - one copy from its mother, and one copy from its father.When one of these cells reproduces, first each of these long DNA molecules, or chromosomes, build copies of themselves out of proteins,staying attached at the middle they way they do during mitosis. So then the cell has four copies of each DNA molecule that it needs. jufibacisvbfusahc Meiosis

Meiosis is the process of cell division in sexually reproducing organisms that reduces the number of chromosomes in reproductive cells from diploid to haploid, leading to the production of gametes in animals and spores in plants. There are four stages of meiosis. The first is Prophase. Prophase is when homologous chromosomes form tetrads and cross over and mitotic spindle travels to opposite polls. The second stage is Metaphase. Metaphase is when tetrads line up at center and chromosome attach to spindle fibers. The third stage is Anaphase. Anaphase is when homologous chromosomes seperate. The last stage is Telophase. Telophase is when cell forms two haploid cells. At first all eukaryote cells divided using a process called mitosis. But about 1.4 billion years ago, some eukaryote cells developed the ability to reproduce using meiosis…