Consider a mutation that causes a decreased activity in a particular protein. A second mutation alters the function of another protein that participates in the same cellular pathway, thereby overcoming the defect in the first protein. This is an example of a(n) (C) intergenic suppressor.
In a procedure known as synthetic rescue, a suppressor mutation is a second mutation that lessens or reverses the phenotypic consequences of an already existing mutant. Therefore, genetic suppression brings back the phenotype that existed before the initial background mutation.
By causing a mutation elsewhere in the genome, intergenic suppression mitigates the impact of a mutation in one gene. The second mutation does not occur on the identical gene as the first one. For finding and researching interactions between molecules, such as proteins, intergenic suppression is helpful.
For instance, a second mutation elsewhere in the genome that restores or creates a suitable alternative connection between those molecules can make up for a mutation that breaks the complimentary interaction between protein molecules.
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Question correction:
Consider a mutation that causes a decreased activity in a particular protein. A second mutation alters the function of another protein that participates in the same cellular pathway, thereby overcoming the defect in the first protein. This is an example of a(n):
A. Inversion mutation
B. Intragenic suppressor
C. Intergenic suppressor
D. Transversion mutation
