Which of the following is not a vestigial organ of man?
Correct answer: D. None of these
- A. Appendix
- B. Coccyx
- C. Both A and B
- D. None of these
Explanation
The appendix is a small finger-like organ that comes off the first part of the large intestine. It is a vestigial organ that had important functions in ancestors but is no longer essential presently. The coccyx is a vestigial organ. It is also called the tailbone. It is present at the lower end of the vertebral column and represents a vestigial tail.
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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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