Which of the following provides the most direct evidence for evolution in a population over a short period of time?
Answer
Observation of changes in allele frequencies in a population of peppered moths over several decades.
The correct answer is Observation of changes in allele frequencies in a population of peppered moths over several decades. — Therefore the correct option is the one describing observed allele‑frequency change.
Step-by-step solution
- Identify the type of evidence that can be observed within a few generations.
- Fossil records and vestigial organs reflect long‑term historical changes, not short‑term observations.
- Comparative anatomy shows similarity but does not demonstrate change over time.
- Changes in allele frequencies measured directly in a population (e.g., peppered moths) give real‑time evidence of evolution.
- Therefore the correct option is the one describing observed allele‑frequency change.
Common mistake: Choosing comparative anatomy or vestigial organs, which are indirect evidence.
Concept tested: Direct evidence of evolution
Published · How this solution was prepared and checked
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