Friday, August 12, 2011
Biology...MITOSIS and MEIOSIS??
Mitosis is the reproduction of somatic, or body cells. These cells are only used for the body, and not for reproduction with gametes. somatic cells have a diploid chromosome number, described as 2n, which means they have two copes of every chromosome. Gametes undergo meiosis, which is a process in which four gametes are made, and are all haploid in number. Haploid cells only carry half the normal chromosome number, and can be described as 1n. With this, after ual reproduction the gametes from two individuals can fuse to for a zygote. Since each gamete is only half the chromosome count, they both together create a diploid cell. The diploid cell of a zygote then forms the somatic cells, it is basically a cycle. The gametes in meiosis allow us to reproduce and produce a regular chromosome cound of 46. Mitosis is also one round of cell division, while meiosis is two.
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