BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This begins every polypeptide chain
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This does not code for an amino acid
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This is a type of substitution mutation which does not change the amino acid sequence, This type of substitution mutation is not shown on the genetic level
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None of the above
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Detailed explanation-1: -Silent mutations are base substitutions that result in no change of the amino acid or amino acid functionality when the altered messenger RNA (mRNA) is translated. For example, if the codon AAA is altered to become AAG, the same amino acid – lysine – will be incorporated into the peptide chain.
Detailed explanation-2: -Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene’s protein.
Detailed explanation-3: -A silent mutation is one of the three types of substitution mutations (also called point mutations)-along with nonsense and missense. Specifically, a silent mutation occurs when a change in the DNA sequence of a gene does not affect the subsequent amino acid sequence of the protein it codes for.
Detailed explanation-4: -Correct answer: If a mutation does not alter the amino acid sequence of a protein, it is considered a silent mutation. A neutral mutation changes the amino acid, but not the function of the protein.
Detailed explanation-5: -A silent mutation (quiet mutation) is a form of mutation that does not cause a major change in the amino acid. As a result, the protein remains active and functional. Because of this, the changes are viewed as though they are neutral in terms of evolution.