Choose the correct option: The presence of homologous organs in different animals indicates

Options

A. independent evolution
B. common ancestry
C. different ancestry
D. hierarchy

Explanation

**Step-by-Step Solution:**

1. **Understanding Homologous Organs**: Homologous organs are structures in different species that share a common ancestry but may serve different functions. This indicates that these organisms evolved from a common ancestor.

2. **Analyzing the Options**: The question provides four options:
- Independent evolution
- Common ancestry
- Different ancestry
- Hierarchy

3. **Identifying the Correct Option**: Since homologous organs arise from a common ancestor, the presence of these organs in different animals indicates that they share a common ancestry.

4. **Examples of Homologous Organs**: For instance, the forelimbs of mammals such as whales, bats, and humans have similar bone structures (humerus, radius, ulna, carpals, metacarpals, and phalanges) but are adapted for different functions (swimming, flying, and grasping, respectively).

5. **Conclusion**: Based on the understanding of homologous organs and their implications, the correct answer is **common ancestry**.

**Final Answer**: The presence of homologous organs in different animals indicates **common ancestry** (Option 2).

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