Multiple Choice
Which of the following statements demonstrates unity in the diversity of life?
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21. Evolution
Introduction to Evolution and Natural Selection
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Which of the following statements about vestigial structures is accurate?
A
Vestigial structures are newly evolved features that serve a current function.
B
Vestigial structures are always harmful to the organism.
C
Vestigial structures are evidence of convergent evolution.
D
Vestigial structures are remnants of organs or features that had a function in an ancestor.
Verified step by step guidance1
Understand the concept of vestigial structures: Vestigial structures are anatomical features or organs that have lost their original function through evolution. They are remnants of structures that were fully functional in ancestral species.
Analyze the statement options: Evaluate each statement to determine if it accurately describes vestigial structures.
Evaluate the first statement: 'Vestigial structures are newly evolved features that serve a current function.' This is incorrect because vestigial structures are not newly evolved; they are remnants of ancestral features.
Evaluate the second statement: 'Vestigial structures are always harmful to the organism.' This is incorrect because vestigial structures are not necessarily harmful; they may be neutral or have minor functions.
Evaluate the third statement: 'Vestigial structures are evidence of convergent evolution.' This is incorrect because vestigial structures are evidence of divergent evolution, showing how species have evolved differently from a common ancestor.
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