This is because Thymine, through adenine, is replaced by uracil. Though there are five only four may be used at one time.
each codon have 3 nitrogenous bases . 3 nitrogenous bases = 1 amino acid or say 1 codon =1 amino acid ,so 2 codon = 2 amino acid
One. A codon, made up of three DNA bases (ATG, for example) corresponds to one amino acid. A whole bunch of codons strung together on the DNA corresponds to a whole bunch of amino acids, ultimately strung together to form a peptide, or protein.
There are 64 codons, that code for only 20 amino acids. This make the genetic code redundant - because different codons can code for the same amino acid.This provides some protection against mistakes - because a replacement of a single base may end up coding for the same amino acid - causing no change to the final protein product.
The answer is nine because one codon has 3 letters.Improved AnswerThe above answer is completely incorrect. The question is how many codons are necessary to specify three amino acids, not bases (letters). As my original answer (which was removed by the previouis contributor) pointed out, each amino acid requires one codon to specify it, so the basic answer is, three codons are necessary to specify any three amino acids. However, if the questioner had in mind how many codons are necessary to specify a polypeptide consisting of three amino acids, the answer is five, because, in addition to the three codons necessary for the amino acids, a start codon of AUG (on the mRNA transcript), and one stop codon (UAG, UGA,or UAA on the mRNA transcipt) are also needed. So, in this sense, five codons are needed to specify a polypeptide of 3 amino acids.Improved Answer: The answer is 9. ^ fail XD
The number of codons needed to code for a protein varies depending on the length of the protein. Each amino acid is coded for by a specific sequence of three nucleotides (a codon). Therefore, you would need to divide the total number of nucleotides in the protein's gene sequence by 3 to find the number of codons required.
1. the start codon 2. 150 codons, 1 for each amino acid 3. the stop codon The total number of different codons is 64...if this question is asking about unique codons used the answer will depend on which amino acids are in the peptide.
The ratio of codons to amino acids is typically 3:1, as each codon consists of three nucleotides that correspond to one amino acid in the genetic code. However, there are 64 possible codons (including stop codons) but only 20 standard amino acids, which means some amino acids are encoded by multiple codons. This redundancy in the genetic code helps to minimize the effects of mutations.
each codon have 3 nitrogenous bases . 3 nitrogenous bases = 1 amino acid or say 1 codon =1 amino acid ,so 2 codon = 2 amino acid
One. A codon, made up of three DNA bases (ATG, for example) corresponds to one amino acid. A whole bunch of codons strung together on the DNA corresponds to a whole bunch of amino acids, ultimately strung together to form a peptide, or protein.
You would need 135 codons for a protein composed of 45 amino acids. This is because each amino acid is coded for by a sequence of three nucleotides (codon), so you would need three codons for every amino acid.
There are 64 codons, that code for only 20 amino acids. This make the genetic code redundant - because different codons can code for the same amino acid.This provides some protection against mistakes - because a replacement of a single base may end up coding for the same amino acid - causing no change to the final protein product.
The answer is nine because one codon has 3 letters.Improved AnswerThe above answer is completely incorrect. The question is how many codons are necessary to specify three amino acids, not bases (letters). As my original answer (which was removed by the previouis contributor) pointed out, each amino acid requires one codon to specify it, so the basic answer is, three codons are necessary to specify any three amino acids. However, if the questioner had in mind how many codons are necessary to specify a polypeptide consisting of three amino acids, the answer is five, because, in addition to the three codons necessary for the amino acids, a start codon of AUG (on the mRNA transcript), and one stop codon (UAG, UGA,or UAA on the mRNA transcipt) are also needed. So, in this sense, five codons are needed to specify a polypeptide of 3 amino acids.Improved Answer: The answer is 9. ^ fail XD
The number of codons needed to code for a protein varies depending on the length of the protein. Each amino acid is coded for by a specific sequence of three nucleotides (a codon). Therefore, you would need to divide the total number of nucleotides in the protein's gene sequence by 3 to find the number of codons required.
A codon is three bases long - so this section of mRNA would have 4 codons; UGA-UUC-AGU-AAC.Each codon relates to a specific amino acid (but several codons can code for the same amino acid, for example both UUU and UUC code for the amino acid Phenylalanine).Normally if you have four codons, such as this section of mRNA, the maximum number of amino acids you could have would be four. However, the first codon in this section, UGA, is actually a STOP codon. This means that when the ribosome reaches this codon, no further amino acids will be joined.This means that no amino acids could be coded for with this section of mRNA. (If the order of the codons was reversed, making the STOP codon last, then the answer would be three).
A single mRNA molecule has 3 codons i.e. 1 amino acid. The question is flawed and does not make sense!
The genetic code is degenerate, meaning that multiple codons can code for the same amino acid. With only 4 bases in RNA (A, U, G, C) and a triplet code (3 bases per codon), there are 64 possible combinations (4^3). However, since there are only 20 amino acids, some amino acids are encoded by multiple codons.
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".