| 释义 | 
		Definition of point mutation in English: point mutationnoun Genetics A mutation affecting only one or very few nucleotides in a gene sequence.  Example sentencesExamples -  Each mutant allele contains a point mutation, and the positions of the Kitl sequences affected in each are shown in Table 1.
 -  Arrows indicate the position of the point mutation and the corresponding nucleotide on the wild-type sequence (right).
 -  To introduce a point mutation the gene must be cloned, the desired point mutation must be generated within that clone, and an I-SceI site must be inserted.
 -  If one of the alleles carries a recessive mutation, such as a point mutation, a second event that creates LOH could be any genetic alteration that inactivates the remaining allele.
 -  So tell me how a simple point mutation changes the information content of the gene.
 
    Definition of point mutation in US English: point mutationnoun Genetics A mutation affecting only one or very few nucleotides in a gene sequence.  Example sentencesExamples -  So tell me how a simple point mutation changes the information content of the gene.
 -  If one of the alleles carries a recessive mutation, such as a point mutation, a second event that creates LOH could be any genetic alteration that inactivates the remaining allele.
 -  To introduce a point mutation the gene must be cloned, the desired point mutation must be generated within that clone, and an I-SceI site must be inserted.
 -  Each mutant allele contains a point mutation, and the positions of the Kitl sequences affected in each are shown in Table 1.
 -  Arrows indicate the position of the point mutation and the corresponding nucleotide on the wild-type sequence (right).
 
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