Form of an allele or genotype that is predominantly associated with organisms upon isolation from nature.
The concept of wild type is both a useful one and somewhat . Its usefullness is that it serves as to describe an aspect of an organism that is predominant as that organism is found in the wild. The archaic aspect is assumptions that anything that is not wild type is in some manner flawed.
It is also a bit of a stretch to view wild type as implying that in some manner an allele that has become within a population. Wild type instead is particularly that which we are most familiar with. Again, this is usually a function of prominence within those populations we are familiar with, but alternatively the concept can ignore a surprisingly large amount of genetic variation that also can exist, e.g., such as within species, and even within strains.
The concept of wild type as associated with microbiology is seen especially with the use of within that field. If an organisms is brought into then by definition genetic variability has been purged from the resulting population. That variability that is left, following , is indeed wild type, but be cautious in interpreting what exactly that means.