According to Lamarck, giraffes have long necks because:
Correct answer: B. They stretched their necks to reach food
- A. They adapted to aquatic life
- B. They stretched their necks to reach food
- C. They inherited long necks
- D. They mutated naturally
Explanation
Lamarck believed that giraffes developed long necks because their ancestors stretched their necks to reach higher leaves, and these acquired traits were inherited by the next generation.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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