During meiosis the number of chromosomes from a gamete mother cell (2n), are halved and the gametes which are formed receive only one set of chromosomes(n).Then after fusion of these gametes during reproduction the zygote (2n) is formed. This zygote is again with normal 2 sets of chromosomes.
Both diploid and haploid cells can undergo mitosis. This makes a lot of sense, because mitosis is essentially like making a photocopy: it creates a perfect reproduction of what you started with. Therefore, if a diploid cell undergoes mitosis, the result is two identical diploid cells (2n →2n). If a haploid cell undergoes mitosis, which is something certain types of plant and fungus do as part of their normal life cycles, the end result is two identical haploid cells (n→n). In meiosis, however, you start with a diploid cell that divides twice to produce four haploid cells. Meiosis produces 4 haploid cells. Mitosis produces 2 diploid cells. The old name for meiosis was reduction/ division. Meiosis I reduces the ploidy level from 2n to n (reduction) while Meiosis II divides the remaining set of chromosomes in a mitosis-like process (division). We have mentioned two types of nuclear division: mitosis, where the nucleus divides into two identical nuclei, and meiosis, which results in the production of four nuclei with half the original number of chromosomes of the parent cell. If a haploid cell undergoes mitosis, which is something certain types of plant and fungus do as part of their normal life cycles, the end result is two identical haploid cells (n→n). In meiosis, however, you start with a diploid cell that divides twice to produce four haploid cells. Answer by Djason24. Confidence votes 450. The purpose of meiosis is to divide the number of chromosomes in gamete cells (spermatazoa and oocytes) to the haploid number (23 chromosomes). Meiosis ensures the proper number of chromosomes to form a zygote, which is 46 chromosomes (diploid number), during fertilization. Or: there are 23 unique types of chromosome in your cells (remember, we are treating the sex chromosomes as the same for simplicity). After replication of the 46 chromosomes, the cell contains 92 chromatids (in 46 pairs). After mitosis two identical cells are created with the same original number of chromosomes, 46. Haploid cells that are generated through meiosis, such as egg and sperm, only have 23 chromosomes, because, remember, meiosis is a reduction division.. If a haploid cell undergoes mitosis, which is something certain types of plant and fungus do as part of their normal life cycles, the end result is two identical haploid cells (n→n). In meiosis, however, you start with a diploid cell that divides twice to produce four haploid cells. Answers. Best Answer: It is simple, the DNA splits or 'unzips' in half, into the leading strand and lagging strand. The complementary strands are then filled with their other strands turning it into two DNA strands. But in the cell, this is just a double Chromosome. With the cellular process of Mitosis, spindle fibers are able to rip the doubled chromosomes apart during these phases, a cell has 92 single chromosomes until the cell fully splits during cytokenisis. So really, Mitosis does not keep a constant chromosome number. Source(s): My tenth grade biology clas Mitosis. Mitosis is a form of eukaryotic cell division that produces two daughter cells with the same genetic component as the parent cell. Chromosomes replicated during the S phase are divided in such a way as to ensure that each daughter cell receives a copy of every chromosome. Meiosis. Meiosis is the form of eukaryotic cell division that produces haploid sex cells or gametes (which contain a single copy of each chromosome) from diploid cells (which contain two copies of each chromosome). Report Abuse. Meiosis is the process where a constant number of chromosomes is maintained in a species. In normal somatic cell there are two sets of identical chromosomes. During meiosis the number of chromosomes from a gamete mother cell (2n), are halved and the gametes which are formed receive only one set of chromosomes(n). Then after fusion of these gametes during reproduction the zygote (2n) is formed. This zygote is again with normal 2 sets of Meiosis is a special type of nuclear division which segregates one copy of each homologous chromosome into each new gamete. Mitosis maintains the cell's original ploidy level (for example, one diploid 2n cell producing two diploid 2n cells; one haploid n cell producing two haploid n cells; etc.). Mitosis produces 2 diploid cells. The old name for meiosis was reduction/ division. Meiosis I reduces the ploidy level from 2n to n (reduction) while Meiosis II divides the remaining set of chromosomes in a mitosis-like process (division).
http://www.shmoop.com/cell-cycle/mitosis-versus-meiosis.html http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookmeiosis.html http://www.shmoop.com/cell-cycle/mitosis-versus-meiosis.html http://www.answers.com/Q/How_does_meiosis_maintain_a_constant_number_of_chromosomes_in_the_body_cells_of_organisms_that_reproduce_sexually http://www.shmoop.com/cell-cycle/mitosis-versus-meiosis.html https://answers.yahoo.com/question/index?qid=20090302095945AAidU0N http://www2.le.ac.uk/departments/genetics/vgec/schoolscolleges/topics/cellcycle-mitosis-meiosis https://answers.yahoo.com/question/index?qid=20090206214042AAGlO9m http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookmeiosis.html
describe how mitosis maintains a constant chromosome number