e. what is the difference between the chromosomes in g1 and the same chromosomes in g2?
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Chromosomes. ... In G1, each chromosome is a single chromatid. In G2, after DNA replication in S phase, as cell enter mitotic prophase, each chromosome consists of a pair of identical sister chromatids, where each chromatid contains a linear DNA molecule that is identical to the joined sister.
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During telophase 1, the movement of separated homologous chromosomes is completed to the opposite poles of the cell. During telophase 2, the movement of sister chromatids is completed to the opposite pole of the cell. ... Therefore, the main difference between telophase 1 and 2 is the events occurring in each step.
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Mitosis consists of one stage whereas meiosis consists of two stages. Mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). Mitosis produces two identical daughter cells whereas meiosis produces four genetically different daughter cells.
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Let's start by looking at a cell right before it begins mitosis. This cell is in interphase (late G 2​start subscript, 2, end subscript phase) and has already copied its DNA, so the chromosomes in the nucleus each consist of two connected copies, called sister chromatids.
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Meiosis 2 is similar to mitosis because it separates the chromosomes to have sister chromatids in each cell. In both processes, you are separating the chromosome and dividing the cell to make 2 cells out of 1 (the only difference is that in meiosis, you're doing that for 2 cells to get 4).
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II. S phase (DNA Synthesis) - Each of the 46 chromosomes are duplicated by the cell. III. G2 phase (Gap 2) - The Cell “double checks” the duplicated chromosomes for error, making any needed repair.
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chromosome is DNA tightly coiled around histones (proteins) homologous chromosomes are two different copies of the same chromosome, and sister chromatids are two identical copies of a chromatin connected by a centromere.
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Recall that there are two divisions during meiosis: meiosis I and meiosis II. The genetic material of the cell is duplicated during S phase of interphase just as it was with mitosis resulting in 46 chromosomes and 92 chromatids during Prophase I and Metaphase I.
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Meiosis I is a type of cell division unique to germ cells, while meiosis II is similar to mitosis. Meiosis I, the first meiotic division, begins with prophase I. During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes.
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At the end of the division process, duplicated chromosomes are divided equally between two cells. These daughter cells are genetically identical diploid cells that have the same chromosome number and chromosome type.
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The main difference between prophase and metaphase is that chromosomes condense during prophase whereas homologous chromosome pairs align in the equatorial plate of the cell during metaphase.
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The basic construction of chromosomes (made of chromatin) and structure (long but scrunched up) is the same in all animals. The difference is that each species has its own set number of chromosomes. For instance, all human cells (except gametes) have 46 chromosomes.
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Explanation: Although both are very similar, the difference between the two is the pairing. Homologous chromosomes are basically two similar chromosomes inherited from father and mother. They are homologous because they have the same genes, though not same alleles.
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Looking at the diagram, you might notice there are a lot of differences between meiosis I and meiosis II, including: In meiosis I, homologous chromosomes separate, while in meiosis II, sister chromatids separate. Meiosis II produces 4 haploid daughter cells, whereas meiosis I produces 2 diploid daughter cells.
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Sister chromatids are 2 copies of a single chromosome and so are genetically identical (they also are physically attached to one another). ... Homologous chromosomes are 2 physically different chromosomes that have the same genes but are not genetically identical.
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Because multiplication happens in both meiosis and mitosis, in meiosis you end up with 4 cells, each containing different genetic information but one of each chromosome and in mitosis you get 2 cells containing identical information with pairs of chromosomes.
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The main difference between male and female karyotypes is that the male karyotype consists of one X and one Y chromosome as their sex chromosome pair whereas the female karyotype consists of two X chromosomes as their sex chromosome pair.