Explain how a single base change in a gene can lead to a single amino acid change in that gene's

step 1 How can a mutation change the sequence of DNA basis but not cause a change in the gene polypepti

Explain how a single base change in a gene can lead to a...

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Key Concepts

Point Mutation

A point mutation is a change in a single nucleotide base in the DNA sequence. This type of mutation is one of the simplest forms of genetic alteration and can have significant effects on gene function depending on where it occurs within the gene.

Codon

A codon is a sequence of three nucleotides in messenger RNA that codes for a specific amino acid. The arrangement and combination of these codons determine the sequence of amino acids in a protein, based on the rules of the genetic code.

Genetic Code

The genetic code is the set of rules that defines how the four nucleotide bases of DNA and RNA are translated into the twenty amino acids used to build proteins. Even a single nucleotide change can alter a codon, potentially leading to the incorporation of a different amino acid during protein synthesis.

Missense Mutation

A missense mutation occurs when a point mutation changes one codon, leading to the substitution of one amino acid for another in the resulting polypeptide. This single amino acid change can affect the protein's structure and function, depending on the role of the amino acid in the protein's overall conformation.

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