Want this question answered?
Three.
The genetic code is stored in the sequence of nucleotide bases in DNA molecules in cells. The genetic code is stored in the sequence of nucleotide bases in either DNA or RNA molecules in viruses, depending on species. A few archaebacteria seem to use a slightly different genetic code.
The genetic code is determined by the specific sequence of four nucleotide bases that make up DNA. The bases are guanine, adenine, thymine, and cytosine.
When a gene is translated into a polypeptide, the codons (each made up of three sequential bases) are sequential on the mRNA. There are no extra bases between the codons, every base in the open reading frame is part of exactly one codon. Furthermore, every possible codon (all 64 three base combinations of the four bases) codes for either an amino acid, or a "stop", so there are no meaningless codons.If the code had "commas" that would mean that there could be bases between codons, or that some triplets would not code for any amino acid (or "stop"). In the 1960's, when researchers were first investigating the nature of the genetic code, the presence of commas in the code seemed like a reasonable hypothesis, particularly once it was established that the code was a triplet code, which means that there are many more possible codons than amino acids (64 vs 20).
The molecule which makes up the genetic material are series of chemicals called nitrogen bases held in a long winding helix. These nitrogen bases are used like letters or characters in a simple code.
Molecular bases
Three.
The genetic code is stored in the sequence of nucleotide bases in DNA molecules in cells. The genetic code is stored in the sequence of nucleotide bases in either DNA or RNA molecules in viruses, depending on species. A few archaebacteria seem to use a slightly different genetic code.
The genetic code is determined by the specific sequence of four nucleotide bases that make up DNA. The bases are guanine, adenine, thymine, and cytosine.
Sequential or "top-down" programming means, simply, you code is executed in predictable order; from the top to the bottom of the source code. Typically, void of any functions.
its a simple system of material coding the items are numbered one after another like pages of a book .Each additional product is given the next available code.
The order of the four nitrogen bases, or nucleotides, in the DNA molecule is called the genetic code. It's a set of rules that maps DNA sequences to proteins in a living cell, and is used in the process of protein synthesis.
When a gene is translated into a polypeptide, the codons (each made up of three sequential bases) are sequential on the mRNA. There are no extra bases between the codons, every base in the open reading frame is part of exactly one codon. Furthermore, every possible codon (all 64 three base combinations of the four bases) codes for either an amino acid, or a "stop", so there are no meaningless codons.If the code had "commas" that would mean that there could be bases between codons, or that some triplets would not code for any amino acid (or "stop"). In the 1960's, when researchers were first investigating the nature of the genetic code, the presence of commas in the code seemed like a reasonable hypothesis, particularly once it was established that the code was a triplet code, which means that there are many more possible codons than amino acids (64 vs 20).
The order of these bases dictate what proteins will be made, sort of like a recipe, but in code.
The three-base sequence on a tRNA molecule is known as an anti-codon. This matches up with the codon (another 3-base code) on the mRNA to ensure that the correct amino acid is added to the chain (protein) being created.
The primary structure of a protein is the sequence of amino acids in the protein. This is determined by the sequence of bases in the DNA ie by the genetic code. Each group of three bases in DNA codes for one amino acid in the protein ie it is a triplet code.
To code for a protein of 150 amino acids, the DNA molecule would need approximately 450 base pairs. This is because each amino acid is encoded by a sequence of three nucleotides called a codon. So, 150 amino acids would require 150 codons, which translates to 450 base pairs.