HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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look for AUG
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start at the beginning
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look for ATG
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when Ms. H tells me to
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Detailed explanation-1: -At the beginning of translation, the ribosome and a tRNA attach to the mRNA. The tRNA is located in the ribosome’s first docking site. This tRNA’s anticodon is complementary to the mRNA’s initiation codon, where translation starts.
Detailed explanation-2: -Genetic Code Analogy. After binding to the mRNA, the ribosome begins translation at the start codon, AUG, and then moves down the mRNA transcript one codon (three nucleotides) at a time until it reaches a stop codon.
Detailed explanation-3: -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-4: -The Beginning of mRNA Is Not Translated This portion of mRNA is located between the first nucleotide that is transcribed and the start codon (AUG) of the coding region, and it does not affect the sequence of amino acids in a protein (Figure 3).