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Point Mutation

A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid. Second, the base substitution can be a missense mutation where the altered codon corresponds to a different amino acid. Or third, the base substitution can be a nonsense mutation where the altered codon corresponds to a stop signal.

Date:June 12, 2010
Credit:Darryl Leja, NHGRI
Dimensions:2400 x 2046
File Size:1.5 Mb
Rights:PublicExcept where otherwise noted, this image is in the public domain and may be used, linked or reproduced without permission. If you use an image, please credit the source listed above with a link back to www.genome.gov where possible. Thank you!



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