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The relationship between nucleotide sequence and amino acid sequence is called the genetic code.

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In those segments of DNA that carry information about proteins, the sequence of the nucleotides determines the sequence of amino acids in a polypeptide chain (one chain of a protein).

A group of three consecutive nucleotides codes for (represents) one amino acid. This group is called a codon.

The different amino acids are coded for by different codons. What each of the 64 codons stands for is the genetic code.

Three of the codons mean STOP; each of the 61 others stands for one of the 20 amino acids. In addition, one of the codons does double duty: it means START when it appears in a particular position.

The coding sections of DNA are called genes. Some genes code for RNA (such as transfer and ribosomal RNA); polypeptide chains are coded for by other genes, or, more specifically, exons of those genes. The exons are often separated by introns, which, although consisting of a sequence of nucleotides, do not code for amino acids.

The idea that nucleotide sequence (often referred to as base sequence) might code for amino acid sequence followed the proposal of the double-helix structure for DNA in 1953.

In 1958 Francis Crick gave the name sequence hypothesisto the idea that the nucleotide sequence corresponded to the sequence of amino acids in the chain to be synthesized. (For some reason this name is not well known now, and is often confused with Crick's term "central dogma", which, as Crick used it, denotes a different concept.)

In 1961 there were two important breakthroughs. Crick and Sydney Brenner showed that the code consisted of "triplets" (Brenner coined the word codon the following year), and Marshall Nirenberg and Heinrich Matthaei developed a technique for working out the code (in its messenger RNA version).

By 1966 all the 64 possible codons had been worked out.

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16y ago
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6mo ago

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid during protein synthesis. Each codon codes for a particular amino acid, which is determined by the genetic code. The relationship between an amino acid and a codon is that the genetic code dictates which codons correspond to each amino acid, ensuring the correct sequence of amino acids in a protein.

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12y ago

Codons are a combination of three nucleotides (Uracil, Guanine, Cytocine, Adenine, Thymine) in a DNA strand that code for an amino acid. So, TTT is one amino acid. Several combinations can code for the same amino acid or there may be only one codon for an amino acid.

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13y ago

codons are 3 nitrogen bases(A,G,C, or T) in a DNA molecule and DNA is an organic molecule, but the type of organic molecule it is, is an amino acid

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11y ago

Every three bases on DNA is called a codon and codes for a specific amino acid. The sequence of bases determines the sequence of amino acids which in turn determines the protein.

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13y ago

amino acids makeup DNA

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10y ago

anti codon

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Q: What is the relationship between an amino acid and a codon?
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Related questions

Is tryptophan the starting codon for mRNA?

No, tryptophan is an amino acid and not a starting codon for mRNA. The starting codon for mRNA is typically AUG, which codes for the amino acid methionine in most cases.


Which amino acid is coded by the DNA codon TAC?

The DNA codon TAC codes for the amino acid Tyrosine.


How many amino acids does a codon contain?

A codon contains three amino acids. Each codon in mRNA corresponds to a specific amino acid in a protein sequence.


What amino acid is AUG or GUG?

The codon AUG represents the amino acid methionine, which serves as the start codon for protein synthesis. The codon GUG typically codes for the amino acid valine.


What amino acid is coded for by the codon AUC?

The codon AUC codes for the amino acid isoleucine.


Which codon is the code for the amino acid histidine?

It is CAC and CAU.


How many amino acids make a codon?

One codon specifies a specific amino acid. However, more than one codon can code for the same amino acid. For example, the codon GUU codes for the specific amino acid valine; and the codons GUC, GUA, and GUG also code for valine.


What codon is the code for the amino acid histidine His?

The mRNA codons for histidine are CAU and CAC.


What is the difference between a coden and an anti coden?

a codon is the sequence of three nucleotides of mRNA, the anti codon is the amino acid of tRNA that is matched to the codon.


Each codon calls for a specific?

amino acid


What is the term for a 3-nucleotide sequence on mRNA that codes for an amino acid?

The term is "codon." Each codon corresponds to a specific amino acid or serves as a start or stop signal for protein synthesis.


For any codon there can only be one?

There is only one corresponding amino acid for each codon. Each codon codes specifically for one amino acid (however, an amino acid can be coded for by several different codons). For example: CAU codes for Histamine (and not any other amino acid) But, CAC also codes for Histamine.