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point mutation
point mutation (gene mutation) A change in the nucleotide sequence of the DNA within a gene; a gene in which such a change has occurred is known as a mutant gene or allele (see mutation). The DNA sequence can be altered in several ways; for example by insertion, substitution, deletion, and inversion. Point mutations result in a misreading of the genetic code during the translation phase of protein synthesis and usually change the order of amino acids making up a protein, which may or may not affect the function of that protein. See also intergenic suppressor; missense mutation. Compare chromosome mutation; single nucleotide polymorphism.
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"point mutation." A Dictionary of Biology. 2004. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. "point mutation." A Dictionary of Biology. 2004. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O6-pointmutation.html "point mutation." A Dictionary of Biology. 2004. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-pointmutation.html |
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point mutation
point mutation A mutation that can be mapped to one specific locus: it is caused by the substitution of one nucleotide for another. A point mutation may also be caused by deletion and inversion.
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MICHAEL ALLABY. "point mutation." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "point mutation." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O7-pointmutation.html MICHAEL ALLABY. "point mutation." A Dictionary of Plant Sciences. 1998. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-pointmutation.html |
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point mutation
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MICHAEL ALLABY. "point mutation." A Dictionary of Zoology. 1999. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "point mutation." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O8-pointmutation.html MICHAEL ALLABY. "point mutation." A Dictionary of Zoology. 1999. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-pointmutation.html |
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point mutation
point mutation A mutation that occurs at only one nucleotide site. The term is often used synonymously with substitution.
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Cite this article
MICHAEL ALLABY. "point mutation." A Dictionary of Ecology. 2004. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "point mutation." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O14-pointmutation.html MICHAEL ALLABY. "point mutation." A Dictionary of Ecology. 2004. Retrieved May 29, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-pointmutation.html |
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