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Biology - Point mutation

Point mutation

A point mutation is one that occurs in a sequence of bases. One base may
be deleted or another inserted. This will result in a frameshift - the
triplets will be interrupted and form new sequences of triplets or codons.
They will therefore be 'read' differently and may result in a different
amino acid [1]being formed. A 'stop' codon or other possibilities such as
a 'nonsense' codon could occur. Inversion and substitution of bases can
also change the DNA sequence.

E.g.

Base substitution mutations:

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Links:
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[1] http://alison.com/#