1 About mutation
is a basic introduction to somatic cells relative to the germ cell concept. It is a type of cell, the genetic information is not like a germ cell as inherited to the next generation. Almost all cells of higher organisms, somatic cells, sperm and egg cells, and in addition to their mother cell outside. Somatic cell genetic information changes will not have an impact on the next generation. Somatic chromosome number is obtained by meiotic germ cells twice. For example,Moncler Femme, in humans,Monster High Pas Cher,Cheap Beats By Dre,Moncler Doudoune Pas Cher, somatic cells are diploid (having two complete sets of chromosomes), the egg and the sperm are haploid (having a complete set of chromosomes). In gene therapy distinguish somatic and germ cells is particularly important. That is in addition to the body cells are human germ cells in vivo, with all the genetic information of the cell. Somatic cells originally obtained from the fertilized egg splits. [1] 1 mutation on the mutant cell mutations in somatic cells, i.e. cells in vivo gene mutation or chromosomal aberrations. Somatic mutation rate is generally 0.1 ~ 1 × 10-6 / generations. Its mutant traits to the next generation individuals generally can not unless some mutations can be passed on to offspring by the asexual reproduction partial or after mutation can produce germ cells. However, mutant cell mutation traits passed through the sub-mitotic cells. For example, many mutant is a somatic mutation, if found excellent mutant (not the flower buds), through cuttings, grafting and other methods to pass to future generations, and to cultivate new varieties. Because somatic mutations can continue to divide in vivo formation of mutant cell lines, so this part of the organization of the genotype of an organism different genotypes other normal tissues, forming a chimeric, the performance of the original character trait mutation coexist in a individual mosaic phenomena, such as chicken feathers and sometimes the same place in the individual presents a different color. Range depends on the size mosaic mutations occur sooner or later, mutations occur sooner, the greater the performance range of mosaic, such as fruit buds in the early mutation can later grow into a variation of the branches. Another example is when the flower bud mutation can later spend on a single inflorescence or a performance variation. In general, the occurrence of somatic mutation, as most of the growth capacity surrounding normal cells is weak or suppressed growing cells, but some cancerous tissue cells to the contrary. Mutant cells cultured in vitro, if you have a growth advantage or through artificial selection, but also the development of mutant cell lines. Mutant cells can be obtained from the organisms in the human body can be obtained from the patient. Looks like self-destruct syndrome (mental stunting,Monster Beats, there are compulsive self-injurious behavior), the patient cells lacking hypoxanthine guanine phosphoribosyl transferase (HGPRT), can be isolated from the patient and the completion of the lack of HGPRT mutant cell lines. In addition, the mutant cell lines can be obtained by mutagenesis,Monster Beats Pas Cher, usually can cause DNA damage to a chemical mutagen treatment of cultured cells, and to create conditions suitable for the growth of mutant cells to filter out the desired mutant cells. Such as lack of available nitrogen guanine HGPRT cells obtained as inducer. Somatic mutations are biochemical genetics and cell biology of good material. Can be used to elucidate the gene or gene product and phenotype relationship between metabolic study in a certain part of each gene in rats. If two kinds of mutant cells mixed culture or fusion, you can study their genes between the availability of complementary or compensatory role, so to clarify whether the two types of cells have the same genetic defect. Furthermore,R4i SDHC 3DS,Casque Monster Beats, somatic mutants can be widely used in somatic gene mapping hybridization, cell division, differentiation and carcinogenesis mechanism of the study. Somatic cell gene from one parent from the parent party a party, and the genes exist in pairs.Edit useful somatic Basic introduction +1
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