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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No change in the amino acid due to wobble
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One amino acid changed
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Changing the codon to stop so the protein isn’t made
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No change in the amino acid because mutations never matter
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Detailed explanation-1: -A nonsense mutation occurs in DNA when a sequence change gives rise to a stop codon rather than a codon specifying an amino acid. The presence of the new stop codon results in the production of a shortened protein that is likely non-functional.
Detailed explanation-2: -Similar C-terminally extended proteins are constitutively produced when a stop codon is mutated to code for an amino acid; in both cases, this can lead to potentially deleterious proteins.
Detailed explanation-3: -A silent mutation does not affect the functioning of the protein. A single nucleotide can change, but the new codon specifies the same amino acid, resulting in an unmutated protein. This type of change is called synonymous change since the old and new codon code for the same amino acid.
Detailed explanation-4: -Answer and Explanation: A point mutation that does not result in a change to the amino acid sequence is called a silent mutation.