You have four nitrogenous bases. They are adenine, guanine, cytosine and thiamine. They can denote only four amino acids. In next step you can put the same four bases. Now you get 4 * 4 = 16 base sequences. You need total 22 such sequences to denote twenty amino acids and two for start and stop gene. So nature has to take the third base pair added to the sequence. Now that you have 4 * 4 * 4 = 64 sequences. They are enough to denote the 22 sequences that you need. So three such base sequences is called as codon. Now you have 64 such codons. Some of them may denote the same amino acid. Now by changing the base pair may lead to denoting the different amino acid. That will lead to changing the sequence of amino acid in protein molecule. By changing the single amino acid in the protein, you get different type of protein. It can lead to formation of antibody against that particular protein.
DNA determines the sequence of the amino acids (building blocks) in a protein. The sequence of nitrogen bases in the DNA determines the sequence of amino acids in a protein.
A point mutation can affect the protein created by a gene by changing a single nucleotide in the gene's DNA sequence. This change can alter the amino acid sequence of the protein, potentially leading to a different protein being produced. This can impact the protein's structure and function, which may result in a variety of effects on the organism.
Chemically, proteins have carbon, oxygen, hydrogen, and nitrogen. The nitrogen is a definite key.
The sequence of nitrogenous bases (A, T, G and C) forms a code for the sequence of amino acids in a protein. The code is a triplet code. This means that three bases code for one amino acid. So, the order of the bases in a gene determines the order of the amino acids in a protein.
Nitrogen bases along a gene form codons, which are three-base sequences that code for specific amino acids during protein synthesis. This sequence of codons provides the genetic instructions that determine the sequence of amino acids in a protein. The genetic code is universal, meaning that the same codons code for the same amino acids in nearly all organisms.
Translation
The genetic code stored in DNA is the sequence of nitrogen bases. The sequence of nitrogen bases determines the sequence of amino acids in a protein, and the sequence of amino acids determines the structure and function of a protein.
The sequence "ATG" in DNA serves as a start codon, indicating the beginning of protein synthesis. This sequence signals the cell to start translating the genetic information into a protein. It is crucial for initiating the process of protein synthesis and ensuring that the correct protein is produced.
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At the end of translation, a protein is being produced. Protein synthesis occurs by translating the information carried by mRNA into a sequence of amino acids that make up the protein.
The sequence of DNA is used, through a process involving the different types of RNA, into amino acids to produce the proteins. The sequence is what determines the amino acids used, and thus an incorrect sequence will build a different protein.
RNA molecules are produced by copying part of the nucleus sequence of DNA into a complementary sequence in RNA.