The two main differences in mitosis and meiosis are that meiosis involves only one cell division, not two, and meiosis results in the production of germ cells or cells that produce gametes. In mitosis, one round yields two genetically identical cells.Continue Reading
Mitosis is a continuous process that is divided into four phases including prophase, metaphase, anaphase and telophase. These four phases along with interphase are referred to as the cell cycle. Prophase is the first stage when chromosomes shorten and become visible under a microscope. The spindle fibers move the replicated chromosomes to the middle of the cell during metaphase, and during anaphase the sister chromatids separate and move towards opposite poles of the cell. The last stage is telophase, when cytokinesis occurs.
Meiosis consists of two nuclear divisions, which is needed for asexual reproduction. The division results in haploid cells called gametes, which is referred to as reduction division because the number of chromosomes is reduced by half.
All living things are made of preexisting cells, but before mitosis or meiosis can take place, the cell must duplicate its chromosomes and produce everything needed for cell division. This is accomplished during interphase, which is divided into the G1 phase, S phase and finally the G2 phase. Once a cell has gone through interphase, it will then undergo mitosis or meiosis.Learn more about Molecular Biology & DNA
The process of meiosis results in four cells that possess half of the chromosomes of the original cell. This occurs in cells that possess two chromosome sets, which happens in organisms that reproduce sexually. The cellular biology of reproduction requires two gamete cells to interact.Full Answer >
The NIH Genetics Home Reference Handbook explains that mutations are passed to offspring if these mutations are present in germ line (sperm or egg) cells. Germ line mutations can occur early in the parent's development so that they affect all of the cells in the parent's body, including eventual gametes. These mutations can also occur in gametes alone and therefore only affect offspring.Full Answer >
Mitosis is the process where one cell divides into two cells with the same number of chromosomes as the original cell, while meiosis is the process where one cell divides into four cells with half the number of chromosomes as the original cell. The processes have very similar steps. In humans, all cells undergo mitosis except the gametes, which undergo meiosis.Full Answer >
Meiosis II is a process that occurs in human sex cells. In order to duplicate, human sex cells undergo meiosis I followed by meiosis II. The coupled processes produce genetically different haploid daughter cells that each have 23 chromosomes.Full Answer >