Question

the bacteria in the example evolved because of...
□ natural selection
□ genetic drift
□ gene flow
rewatch

Explanation:

In typical bacterial evolution examples (like antibiotic resistance), individuals with traits that improve survival/reproduction (e.g., resistance genes) survive environmental pressures, pass on those traits, and become the dominant population. This matches natural selection, where environmental factors drive the spread of advantageous heritable traits. Genetic drift (random allele frequency changes) and gene flow (transfer of genes between populations) are not the primary drivers of most common bacterial evolution scenarios.

Answer:

natural selection