Which of the following ideas was not part of Charles Darwin's theory of evolution by natural selection?
Correct answer: B. Variation between individuals arises by gene mutation
- A. Organisms produce more off springs than the environment can support
- B. Variation between individuals arises by gene mutation
- C. Only those individuals best adapted by environment survive and reproduce
- D. Individuals compete for scarce resources
Explanation
The idea that was not part of Charles Darwin's theory of evolution by natural selection is Option B: Variation between individuals arises by gene mutation. While Darwin acknowledged the existence of variation, he did not have a detailed understanding of the genetic mechanisms behind it, such as gene mutations.
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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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