Homologous chromosome

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    small a, big B, small b will all be replicated. This will create a doubling of the DNA that existed and will later be condensed into chromosomes. After interphase, prophase I occurs; in prophase I the replicated chromosomes pair up with their homologous pairs and this creates a tetrad that is formed by the sister chromatids. The sister chromatids were the homologous chromosomes before being paired up. In reference of the last example, the replicated big A will pair up with the…

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    and repair of a cell, meiosis, a sexual process, creates genetic diversity through sexual reproduction. Mitosis can occur in any organism, but meiosis only occurs in humans, animals, plants, and fungi. Another difference between mitosis and meiosis is that the daughter cells produced by mitosis are genetically identical, unlike the daughter cells produced by meiosis which are genetically different. Crossing over, which is the process of the exchange of genetic material between homologous…

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    identical to their mothers and have two sets of chromosomes. Mitosis produces 2 diploid cells. Both mitosis and meiosis are processes of cell division. They have the same steps for cell division, prophase, metaphase, anaphase, and telophase. The stages of which are interphase, prophase, metaphase, anaphase, and telophase. During prophase, chromatin condenses into chromosomes, and the nuclear envelope breaks down. The centrioles near the nucleus begin to separate and move to opposite poles of…

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    Meiosis

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    he two processes of nuclear division are similar as in they allow cells to divide and reproduce, but they also have many differences. Meiosis is the type of nuclear division that occurs in sexually reproducing organisms. In meiosis, the diploid number of chromosomes is reduced to the haploid number. Gametes have the haploid number, while zygotes have the diploid number. The homologous chromosomes that appear in the zygote look alike and have the same length and centromere position, but the…

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    Genetics Down Syndrome

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    Genetics To Down Syndrome Genetics describes the makeup of our cells, genes, chromosomes, and phenotypes. When there is alter in a gene or a duplication of a chromosome, it can lead to a certain diseases. One of the main diseases known today from a duplication of a chromosome is Down syndrome. John Down first put a name to Down syndrome in 1866, but artifacts from Mexico and Saxon documented some cases of Down syndrome in individuals, and also some were found in paintings of the Renaissance in…

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    mitosis and meiosis. Your answer should not only include a summary of each process, but should discuss both the similarities and differences between them. Mitosis is an asexual process that results in identical offspring. There is no crossing over or homologous pairs in this process. There is only one division in this process and two diploid cells are formed at the end of it. It results in two daughter cells with the same number of chromosomes. Mitosis has interphase, prophase, metaphase,…

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    Cell Division In Cell Theory

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    the daughter cells having the same number of chromosomes as the parent cell. We need cell division as it is used in reproduction of new species, growth and repair of damaged cells and tissues, and to reduce the cell size. Larger cells are insufficient, as it needs more nutrients (such as sugar and proteins) for energy and excretion of wastes (mainly CO2), whereas when broken down to smaller cell has a smaller ratio of volume to surface area is much more ideal. It is carried out through the…

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    Meiosis Cell Lab

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    pairs of chromosomes. Outside of the nucleus there will be centrioles drawn. This is where meiosis begins and replicates the cell Spindle fibers start to form on the centrioles and chromosome pairs bind together making tetrads. Nuclear membrane starts to dissolve. Nuclear membrane will be drawn in dashed lines. The chromosomes will be homologous pairs with centromere in the center holding the chromosome together and there will be spindle fibers extended from the centrioles. Shows how nuclear…

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    Chromatin, chromatids, and chromosomes have different transformations in terms of mitosis and meiosis. Chromatin in Meiosis and Mitosis are shown differently in Interphase. In Mitosis, the chromatin is made up of DNA and proteins. The DNA coils around the protein and that structure is called a nucleosome. Each chromatid in Mitosis is made up of many strings of the DNA and proteins (nucleosomes) to form a half X. The chromosome is made up of two of the chromatids (DNA and proteins-nucleosomes)…

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    Meiosis Research Paper

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    division” because the homologous chromosomes, chromosomes that are identical, are separated into two different cells. These two new cells are referred to as haploid because they only contain one copy of each chromosome (1n). Meiosis I differs most from mitosis because more chromosomes are involved during this process. During Prophase I, everything that normally happens in Prophase still occurs, but in Meiosis, the homologous chromosomes must be paired up and then crossed over into one another.…

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