What is a vestigial trait?
Correct answer: D. A structure that has lost its function but has been retained
- A. A trait that makes an organism better suited to a habitat
- B. A structure that has origins in a common ancestor, but has evolved to perform different functions
- C. A change to a cell's genome
- D. A structure that has lost its function but has been retained
Explanation
Option D is correct as a vestigial trait is a characteristic of a species that was lost by evolution due to lack of need for that trait.
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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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