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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A stop codon signals that the protein is finished being built
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A stop codon signals that the ribosome needs to pause before continuing to build the protein
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A stop codon signals that the amino acid chain should break in half midway through construction
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A stop codon signals that the tRNA’s should only retrieve 3 more amino acids to finish building the protein
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Detailed explanation-1: -1) Stop Codon: Stop codons is a mRNA which is a sequence of three nucleotides. It signals to stop the protein synthesis in the cell.
Detailed explanation-2: -There are 3 STOP codons in the genetic code-UAG, UAA, and UGA. These codons signal the end of the polypeptide chain during translation.
Detailed explanation-3: -A stop codon is a sequence of three nucleotides (a trinucleotide) in DNA or messenger RNA (mRNA) that signals a halt to protein synthesis in the cell. There are 64 different trinucleotide codons: 61 specify amino acids and 3 are stop codons (i.e., UAA, UAG and UGA).
Detailed explanation-4: -Stop codon : It includes UAA, UAG and UGA. These codons signal end of protain synthesis.
Detailed explanation-5: -Stop Codons Mark the End of Translation The end of the protein-coding message is signaled by the presence of one of three codons (UAA, UAG, or UGA) called stop codons (see Figure 6-50). These are not recognized by a tRNA and do not specify an amino acid, but instead signal to the ribosome to stop translation.