Which of the following is not a vestigial organ?
Correct answer: C. Pelvic in man
- A. Appendix
- B. Skeleton of whale
- C. Pelvic in man
- D. Leg bone in snakes
Explanation
For instance, the skeletons of whales and some snakes retain vestiges of the pelvis and leg bones of walking ancestors, (Fig. 24.2) vermiform appendix in carnivores, ear muscles in man etc.
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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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