Question

multiple choice question
although kochs postulates present a logical framework for establishing a particular microbe as the cause of a disease, they cannot always be applied today.
instead, microbiologists sometimes use ______.

procedures to isolate and manipulate viruses
computer simulations of disease models
molecular and genetic evidence
organoids produced from human stem cells

Explanation:

Koch's postulates rely on culturing microbes and inoculating susceptible organisms, which is not feasible for all pathogens (like some intracellular bacteria, viruses, or unculturable microbes). Molecular and genetic evidence, such as detecting specific microbial DNA/RNA sequences in diseased tissues or identifying virulence genes, is a widely used alternative to link microbes to disease when Koch's postulates cannot be applied. The other options are either too narrow (virus isolation, organoids) or not the primary alternative (computer simulations).

Answer:

molecular and genetic evidence