Biology 3593B Study Guide - Quiz Guide: Lysine, Amine, Stop Codon
Document Summary
An mrna sequence is decoded in sets of three nucleotides: Dna can act as a direct template for synthesis of rna through complementary base pairing. There are only 4 nucleotides in mrna and 20 different types of amino acids in a protein, this translation can"t be accounted for by a direct 1-to-1 correspondence between nucleotide in rna and amino acid in proteins. The rules for translation between nucleotide to amino acid is known as the genetic code. The sequence of nucleotides in mrna is read in groups of 3. Each group of 3 consecutive nucleotides in a rna is called a codon, each codon specifies for one amino acid. In principle, an rna sequence can be translated in any one of three different reading frames, depending on where the decoding process begins. However, only one of the three possible reading frames in an mrna encodes the required protein. (question 1) trna molecules match amino acids to codons in mrna.
