Which one of the following is not a vestigial organ in humans?
Correct answer: D. Tail of lizard
- A. Vermiform appendix
- B. Hind limb bones
- C. Coccyx
- D. Tail of lizard
Explanation
The tail of a lizard is not a vestigial organ in humans, as it is fully functional in lizards. The other options (appendix, coccyx, hind limb bones) are considered vestigial in humans.
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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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