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An mRNA Sequence Is Decoded in Sets of Three Nucleotides The sequence of nucleotides in the mRNA molecule is read in consecutive groups of three. RNA is a linear polymer of four different nucleotides, so there are 4 × 4 × 4 = 64 possible combinations of three nucleotides: the triplets AAA, AUA, AUG, and so on. redundant and some amino acids are specified by more than one triplet three consecutive nucleotides in mRNA is called a ______, and each codon specifies either one amino acid or a stop to the translation process. special punctuation signal at the beginning of each RNA message sets the correct reading frame at the start of protein synthesis tRNA Molecules Match Amino Acids to Codons in mRNA Four short segments of each folded tRNA are double-helical, producing a molecule that looks like a cloverleaf when drawn schematically The cloverleaf undergoes further folding to form a compact L-shaped structure that is held together by additional hydrogen bonds between different regions of the molecule One of these regions forms the ______, a set of three consecutive nucleotides that pairs with the complementary codon in an mRNA molecule. The other is a short single-strand region at the 3′ end of the molecule; this is the site where the amino acid that matches the codon is attached to the tRNA.
An mRNA Sequence Is Decoded in Sets of Three Nucleotides The sequence of nucleotides in the mRNA molecule is read in consecutive groups of three. RNA is a linear polymer of four different nucleotides, so there are 4 × 4 × 4 = 64 possible combinations of three nucleotides: the triplets AAA, AUA, AUG, and so on. redundant and some amino acids are specified by more than one triplet three consecutive nucleotides in mRNA is called a ______, and each codon specifies either one amino acid or a stop to the translation process. special punctuation signal at the beginning of each RNA message sets the correct reading frame at the start of protein synthesis tRNA Molecules Match Amino Acids to Codons in mRNA Four short segments of each folded tRNA are double-helical, producing a molecule that looks like a cloverleaf when drawn schematically The cloverleaf undergoes further folding to form a compact L-shaped structure that is held together by additional hydrogen bonds between different regions of the molecule One of these regions forms the ______, a set of three consecutive nucleotides that pairs with the complementary codon in an mRNA molecule. The other is a short single-strand region at the 3′ end of the molecule; this is the site where the amino acid that matches the codon is attached to the tRNA.
codon, anticodon
