Respuesta :
It is the arrangement of nucleotide within the genes which differs among DNA structures of different species. Each gene contains several codons which is three nucleotide long. Several nucleotide are present in a DNA strand that is why we call it as polynucleotide. The sequence of nucleotide with in the DNA describes the sequence of mRNA and so is transcribed into proteins. Any change in the arrangement of nucleotide will change the final protein which is formed.
The arrangement of the nucleotide within the genes is different among the DNA structures of different species.
Further Explanation:
A codon is a triplet of mRNA nucleotide sequence, which codes for an amino acid. A polymer of amino acids makes up a protein chain.The process of translation involves the conversion of an mRNA strand to a chain of amino acids. A codon is a triplet of the mRNA sequence, which identifies an amino acid. The genetic code tells the sequence of the genetic information encoded in the proteins. The genes that code for proteins are the tri-nucleotide units. These units are called codons and each codon codes for a single amino acid. There are 64 codons, 61 of which code for amino acids and, (3) three are stop codons that occur near the end of mRNA. Each codon codes for an amino acid but one amino acid can be coded by more than one codon. The arrangement of nucleotide's varies from one individual to another.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Genetics
Keywords:
Codon, gene, amino acid, stop, nucleotide, translation, sequence, chain, process, codes, polymer, arrangement, protein, genetic information
