Mitosis and meiosis

Mitosis

Mitosis and Meiosis

Mitosis and meiosis are both forms of cell split, however , their particular processes aren’t identical. Mitosis happens in somatic cells (cells which are not gametes), and it creates two genetically identical child cells. Mitosis happens to substitute dead or damaged cells or during growth. Mitosis consists of four phases: prophase, metaphase, anaphase, and telophase. DNA replication happens during S period which is prior to mitotic stage. During prophase, the chromatin condense into chromosomes, plus the mitotic spindle forms (textbook, 94). During metaphase, the chromosomes line up along the middle of the cell, known as the metaphase platter. During anaphase, the chromatid pairs distinct, and each half the pair is named a chromosome. During telophase, the last level of mitosis, the identical pieces of chromosomes are at opposing poles of the cell, the chromosomes go back back to chromatin, and a nuclear package reforms about each number of chromatin. The division of the cytoplasm after nuclear section is called cytokinesis (textbook, 95).

Meiosis, in contrast, occurs in gametes (sex cells), produces four genetically distinct daughter cellular material, and entails two categories of innate material. Meiosis is broken up into in to two parts: meiosis We and meiosis II which in turn both incorporate four parts. Meiosis My spouse and i occurs initial after DNA replication and consists of prophase I, metaphase I, anaphase I, and telophase I actually. Prophase I, much just like prophase in mitosis, can be when the chromosomes shorten and the mitotic spindle forms. Yet , unlike prophase in mitosis, the two genetically identical sister chromatids set off, and crossing more than occurs between non sibling chromatids. Crossing over is the very important purpose that no two people have a similar DNA. Metaphase I is very similar to metaphase in mitosis because the homologous pairs of chromosomes line up along the metaphase plate. In anaphase My spouse and i, the homologous pairs of chromosomes will be separated and pulled to opposite attributes of the cell leaving the paired chromatids still together (textbook, 97).

Meiosis I brings about two genetically different haploid cells after telophase I actually and cytokinesis which are a lot like telophase and cytokinesis of mitosis. Meiosis II involves prophase II, metaphase 2, anaphase 2, and telophase II. Prophase II is similar to prophase in mitosis, with no crossing over occurs during prophase 2. Metaphase II is if the sister chromatids line up along the metaphase plate. During anaphase II, the sister chromatids separate and move to opposing poles of the cell. The final step of meiosis is telophase II and cytokinesis where nuclear papers reform and 4, genetically different haploid gametes are formed as a result of the original single diploid cell (textbook, 97).