NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A frame shift is caused by ____ mutations.
A
deletion and insertion
B
missense and insertion
C
missense and nonsense
D
nonsense and deletion
Explanation: 

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.

There is 1 question to complete.