Multiple Choice
Which of the following is the original basis for differentiation of the three domains of life?
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1. Introduction to Biology
Introduction to Taxonomy
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In comparative anatomy, what does it indicate if the bones are arranged in a similar way in different animals?
A
They live in the same habitat.
B
They have identical diets.
C
They share a common evolutionary ancestor.
D
They are members of the same species.
Verified step by step guidance1
Understand the concept of comparative anatomy: Comparative anatomy involves studying the similarities and differences in the anatomy of different organisms to infer relationships and evolutionary history.
Focus on homologous structures: Homologous structures are anatomical features that are similar in structure but may serve different functions in different organisms. These similarities suggest a shared evolutionary origin.
Recognize the significance of similar bone arrangements: If the bones are arranged in a similar way in different animals, it indicates that these animals likely inherited these structures from a common ancestor, even if the functions of the bones have diverged over time.
Eliminate incorrect options: Living in the same habitat or having identical diets does not necessarily result in similar bone arrangements. Similarly, animals with similar bone arrangements are not necessarily members of the same species.
Conclude the correct interpretation: The presence of similar bone arrangements in different animals is evidence that they share a common evolutionary ancestor, which is a key principle in evolutionary biology.
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