THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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start codon
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fast triplet
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beginning of the strand
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stop codon
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Detailed explanation-1: -At the start of the initiation phase of translation, the ribosome attaches to the mRNA strand and finds the beginning of the genetic message, called the start codon (Figure 4). This codon is almost always AUG, which corresponds to the amino acid methionine.
Detailed explanation-2: -The start codon in all mRNA molecules has the sequence AUG and codes for methionine.
Detailed explanation-3: -The ribosome starts translation, the assembly of a protein out of amino acids, when it encounters the start codon in the mRNA, which is the sequence AUG.
Detailed explanation-4: -The standard start codon for translation of a gene is “AUG, ” which encodes the amino acid methionine (Met or M), and establishes the reading frame for the ribosome to follow, adding corresponding amino acids in a polypeptide chain.
Detailed explanation-5: -A start codon in DNA initiates the translation of the first amino acid in the polypeptide chain. The first three bases of the coding sequence of mRNA to be translated into proteins, is where the initiation codon is located.