any change in the dna of a cell. mutations may be caused by mistakes during cell division, or they may be caused by exposure to dna-damaging agents in the environment. mutations can be harmful, beneficial, or have no effect. if they occur in cells that make eggs or sperm, they can be inherited; if mutations occur in other types of cells, they are not inherited. certain mutations may lead to cancer or other diseases.
出典:Wikipedia
出典:『Wikipedia』 (2011/06/08 03:32 UTC 版)
In molecular biology and genetics, mutations are changes in a genomic sequence: the DNA sequence of a cell's genome or the DNA or RNA sequence of a virus. They can be defined as sudden and spontaneous changes in the cell. Mutations are caused by radiation, viruses, transposons and mutagenic chemicals, as well as errors that occur during meiosis or DNA replication. They can also be induced by the organism itself, by cellular processes such as hypermutation.
undergo mutation
miscalcuIation
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