Difference between revisions of "Point mutation"
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The sickle-cell disease is caused by a single point mutation in one allele of the beta [[hemoglobin]] gene, whereby a CCT codon is converted into TCT. The TCT then mistakenly encodes the [[amino acid]] serine instead of proline. | The sickle-cell disease is caused by a single point mutation in one allele of the beta [[hemoglobin]] gene, whereby a CCT codon is converted into TCT. The TCT then mistakenly encodes the [[amino acid]] serine instead of proline. | ||
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| + | A point mutation cannot add new information to the genome. <ref>AIG article [http://www.answersingenesis.org/articles/2008/02/01/feedback-new-information]</ref> | ||
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| + | {{reflist}} | ||
[[Category:genetics]] | [[Category:genetics]] | ||
[[Category:diseases]] | [[Category:diseases]] | ||
Revision as of 23:30, February 3, 2009
A point mutation is the most limited type of mutation, whereby a single base nucleotide is replaced with another nucleotide. Sometimes the expression "point mutation" can also include the addition or subtraction of a single base pair, which is also referred to as an "indel".
The sickle-cell disease is caused by a single point mutation in one allele of the beta hemoglobin gene, whereby a CCT codon is converted into TCT. The TCT then mistakenly encodes the amino acid serine instead of proline.
A point mutation cannot add new information to the genome. [1]