What is Codon? Is it on DNA or RNA?

The codon is located on the RNA and is three consecutive base pairs.

Associated with the synthesis of specified proteins.

Codon Codon.

Definition: Each adjacent three nucleotides in an mRNA molecule are grouped together to represent a certain amino acid, called a codon, in protein synthesis.

Scientists have discovered that messenger RNA in cells determines the type and order of amino acids in protein molecules. That is, the sequence of the four nucleotides (bases) in the messenger RNA molecule determines the sequence of the 20 amino acids in the protein molecule. What is the relationship between the number of bases and the types and numbers of amino acids?

To determine this relationship, the researchers added a 120-base messenger RNA molecule and everything needed to synthesize the protein in a test tube, resulting in a 40-amino acid peptide molecule. It can be seen that three bases on the messenger RNA molecule can determine one amino acid. Scientists call the three adjacent bases on the messenger RNA strand that determine an amino acid a "codon", also known as the triplet code.

There are four bases that make up RNA, and every three bases determine one amino acid. Theoretically, the combination of bases has 4 to the 3rd power = 64 kinds, and the combination of 64 bases is 64 codons. How do you decide on 20 amino acids?

A careful analysis of the codon table of 20 amino acids shows that the same amino acid can be determined by several different codons, the starting codon is AUG (methionine) GUG (valine), and there are three codons UAA, UAG, and UGA that cannot determine any amino acids and are the stop codons for protein synthesis.

RNA that contains a codon structure is mRNA.

Ribonucleic acid (abbreviated as RNA, i.e., ribonucleic acid) is a body of genetic information that exists in biological cells and some viruses and viroids. RNA is made up of ribonucleotides condensed by phosphodiester bonds to grow into chains. A ribonucleotide molecule is made up of phosphoric acid, ribose sugar, and bases.

There are 4 kinds of RNA bases, namely A (adenine), G (guanine), C (cytosine), and U (uracil), among which, U (uracil) replaces T (thymine) in DNA. The role of ribonucleic acid in the body is mainly to guide the synthesis of proteins.

Messenger RNA (mRNA) was first discovered in 1960, and it is responsible for transmitting genetic information and directly guiding protein synthesis in the process of protein synthesis, and has the following characteristics.

Codon refers to the group of three adjacent nucleotides in the messenger RNA molecule, which represents the law of a certain amino acid in protein synthesis.

Messenger RNA in cells determines the type and order of amino acids in protein molecules. The sequences of the four nucleotides (bases) in the messenger RNA molecule determine the sequences of the 20 amino acids in the protein molecule. Whereas, three bases on the messenger RNA molecule can determine one amino acid.

The concept of this question is a bit confusing.

Codons are triplet codes on the coding sequence, and each codon contains 3 bases corresponding to an amino acid or the start and end signal of protein translation. Therefore, the codon order determines the order of amino acids on the translated protein or peptide chain.

There are many kinds of RNA, some are transcribed from DNA, transcription is to synthesize the corresponding RNA according to the DNA template, their sequence is the same, but the T base in the DNA sequence is the U base in RNA.

Codons do exist only on mRNA, codon definition: Scientists call the three adjacent bases on the messenger RNA (mRNA) strand that determine an amino acid a "codon" codon, also known as a triplet code.

Genetic information, codons, and anticodons are different and linkedGenetic information refers to the order of deoxynucleoside (base) on genes in a DNA molecule, codon refers to the order of three adjacent bases on messenger RNA that determine an amino acid, and anticodon refers to the order of three bases at one end of the transfer RNA. The connection is that the genetic information of the DNA (gene) is transmitted to the messenger RNA through transcription, the transporting RNA carries amino acids at one end, and the anticodon at the other end pairs with the codon (base) on the messenger RNA.

That's right

Codonm, a group of three adjacent nucleotides in an RNA molecule, represents a certain amino acid in protein synthesis.

1) A deoxynucleotide contains one base, and there are 4200 base pairs in the DNA molecule, then the number of deoxynucleotides it contains is 4200 2 = 8400;

2) Transcription is the process of synthesizing hail-digging RNA from a strand of a DNA molecule with 8400 deoxynucleotides in the DNA molecule, and the mRNA formed by its transcription contains 4200 bases; The codon is the adjacent 3 bases in the mRNA, so the mRNA molecule contains at least 4200 codons 3 = 1400

Therefore, choose Zhao Sui: b judge guess the sail.

1) Genetic information refers to the sequential bond of the bases in the DNA molecule, so the genetic information is on the DNA molecule;

2) The genetic code refers to the 3 adjacent bases in the mRNA that determine an amino acid, so the genetic code is on the mRNA;

3) Anticodon refers to the 3 bases at one end of the tRNA, which can be paired with the codon complementarly, so the anticodon is on the tRNA

Therefore, I chose: Good morning a