Biology · Evolution
On what primary basis did Charles Darwin formulate his theory of evolution by natural selection?
- 1By selecting the fittest organisms from a generation to produce the next generation
- 2By a detailed study of ancient fossils
- 3By observation of variations in related species in nature✓
- 4By applying the Laws of Genetics (Mendel's Laws) to natural populations
Correct answer
By observation of variations in related species in nature
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