Which of the following best defines a strain?
A) a population of cells with similar characteristics
B) a group of organisms with a limited geographical distribution
C) same as a species
D) a pure culture that is not totally identical to other cultures of the same species
E) a group of cells derived from a single parent

Question

Quizplus · Accepted Answer

A strain is a pure culture of microorganisms that is not identical to other cultures of the same species. The difference between strains can often be seen as differences in their genetic makeup or in certain phenotypic characteristics. Strains can be used to study the effects of mutations or environmental factors on microbial growth and metabolism. Choice A defines a population or a clone, choice B defines an ecological term, choice C is incorrect, and choice E is too specific to describe all strains.

Which of the Following Best Defines a Strain