Question

antibiotic resistance in bacteria is an example of ______. genetic drift horizontal gene flow natural selection nonrandom mating need help? review these concept resources.

Explanation:

Antibiotic - resistant bacteria survive antibiotic exposure while non - resistant ones die. This is a classic case of natural selection where the environment (presence of antibiotics) selects for bacteria with resistance traits. Genetic drift is random change in allele frequencies, horizontal gene flow is transfer of genetic material between organisms, and nonrandom mating is about mating preferences, none of which directly apply here.

Answer:

natural selection