[mekovi]

Textbook says that it may or may not alter the Amino acid sequence of a protein, while the definition on this site is "A form of point mutation resulting in a codon that codes for a different amino acid, and thus, causes the synthesis of a protein with an altered amino acid sequence during translation."

Help please 🙂

[JackBean]

missense mutation IMHO means, that the sense of sequenced is changed, thus it should be the second definition.

The first one is probably about point mutations in general.

[magicsiew]

Yes, agree with JackBean, missense mutation will alter the amino acid. If may not alter the amino acid, we call that silent mutation.

[Author]

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