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No they are not. For a codon, there are 4^3 = 64 codon combinations, but only 20 [common] amino acids. The 4 represents the 4 nitrogenous bases, and the ^3 represents the arrangement into a codon (3 bp).

An example of an amino acid that is specified by more than one amino acid is Alanine, which is specified by any of the following combinations: GUU, GUC, GUA, GUG.

Because most amino acids have more than one codon, the genetic code is called "degenerate".

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Related Questions

What amino acids are coded for by the mRnas?

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How many nucleotides are necessary to code for a polypeptide that is 200 amino acids long?

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How do nucleotides in the RNA molecule code for various amino acids How many nucleotides code for one amino acid?

Each nucleotide is made up of an organic base, a pentose sugar and a phosphate. Nucleotides can be arranged in various different orders and that order dictates which amino acid it codes for, three amino acids code for one nucleotide. Is this enough detail?


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How many codons would be needed if a bacterial protein contains 150 amino acids?

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Each codon codes for a specific amino acid, which is a building block of proteins. The sequence of codons in mRNA determines the sequence of amino acids in a protein. There are 64 possible codons, with 61 coding for amino acids and 3 serving as stop codons to signal the end of protein synthesis.


In DNA every three bases is called?

Every three bases is called a condon. These tell you the specific amino acids!


What is the ratio of codon to amino acid?

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