The genetic code & codon table (article) | Khan Academy
The stop codons UAA, UGA, and UAG terminate translation by signaling the ribosome to release the newly formed polypeptide chain. These codons don't code for any amino acids and instead …
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The genetic code (article) | Khan Academy
Each codon specifies a particular amino acid, or, in some cases, provides a "stop" signal that ends translation. In addition, the codon AUG has a special role, serving as the start codon …
RNA and protein synthesis review (article) | Khan Academy
Silent mutations do not affect the sequence of amino acids during translation. Nonsense mutations result in a stop codon where an amino acid should be, causing translation to stop …
Impact of mutations on translation into amino acids
Now, all of a sudden, it codes for a stop codon, and so, the actual translation process would stop, which could be a very, very big deal if this DNA sequence, if the normal, non-mutated …
Intro to gene expression (central dogma) (article) | Khan Academy
During translation, the nucleotides of the mRNA are read in groups of three called codons. Each codon specifies a particular amino acid or a stop signal. This set of relationships is known as …
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O código genético (artigo) | Tradução | Khan Academy
Studies on polynucleotides, XLIX. Stimulation of the binding of aminoacyl-sRNA's to ribosomes by ribotrinucleotides and a survey of codon assignments for 20 amino acids. PNAS , 54 (5), 1378 …
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The trp operon (article) | Khan Academy
When levels of tryptophan are high, attenuation causes RNA polymerase to stop prematurely when it's transcribing the trp operon. Only a short, stubby mRNA is made, one that does not …