NURSING EXAM QUESTIONS
MICROBIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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deletion and insertion
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missense and insertion
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missense and nonsense
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nonsense and deletion
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Detailed explanation-1: -A frameshift mutation in a gene refers to the insertion or deletion of nucleotide bases in numbers that are not multiples of three. This is important because a cell reads a gene’s code in groups of three bases when making a protein.
Detailed explanation-2: -An insertion or deletion involving a number of base pairs that is not a multiple of three, which consequently disrupts the triplet reading frame of a DNA sequence.
Detailed explanation-3: -Deletion frameshift mutation, wherein one or more nucleotides are deleted in a nucleic acid, resulting in the alteration of the reading frame, i.e., reading frameshift, of the nucleic acid. Deletion is a more common mechanism for inducing the frameshift mutation that results in an altered reading frame.
Detailed explanation-4: -A frameshift mutation (also called a framing error or a reading frame shift) is a genetic mutation caused by indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three.
Detailed explanation-5: -No, point mutations and frameshift mutations are two different types of gene mutations that happen in the nucleotide sequence of a gene.