Question

which scenario would most likely result in genetic drift? a gardener plants only the seeds from last years largest vegetables. a hurricane cuts off a small section of beach from the mainland, dividing a population of sand fleas. individual bacteria not killed by a given antibiotic produce offspring that are also unaffected by the same. noise pollution prevents female frogs from hearing males with higher - pitched voices, but not males with lower - pitched voices.

Explanation:

Genetic drift is a change in the frequency of an allele in a population due to random sampling of organisms. A hurricane cutting off a small section of a population (like sand fleas on a beach) can cause a random change in the gene - pool of the remaining population, which is an example of genetic drift. The other scenarios involve selection pressures (noise pollution affecting frog communication), or non - random selection (gardener's choice of seeds) or bacterial resistance (not genetic drift).

Answer:

A hurricane cuts off a small section of beach from the mainland, dividing a population of sand fleas.