Which of the following pair of evidences indicates the common ancestry ?

Options

A. Homologous organs&analogous organs
B. Homologous organs & vestigeal organs
C. Analogous organs & vestigeal organs
D. Both (A) and (C)

Answer

To determine which pair of evidences indicates common ancestry, we need to analyze the types of organs mentioned: homologous organs, analogous organs, and vestigial organs.

### Step-by-Step Solution:

1. **Understand Homologous Organs**:
- Homologous organs are those that have a similar structure and origin but may serve different functions.
- Example: The forelimbs of humans, whales, and bats have a similar bone structure but are adapted for different functions (manipulation, swimming, and flying respectively).
- Conclusion: Homologous organs indicate common ancestry because they arise from a common ancestor.

2. **Understand Analogous Organs**:
- Analogous organs are those that have similar functions but different structures and origins.
- Example: The wings of insects and birds serve the same function (flight) but have different structural origins.
- Conclusion: Analogous organs do not indicate common ancestry as they do not share a common origin.

3. **Understand Vestigial Organs**:
- Vestigial organs are those that have lost their original function through evolution. They may have been useful to ancestors but are now reduced or non-functional.
- Example: The human appendix is considered vestigial as it no longer serves a significant purpose in digestion.
- Conclusion: Vestigial organs provide evidence of common ancestry because they indicate that an organism shares a lineage with ancestors that had functional versions of these organs.

4. **Identify the Correct Pair**:
- From the analysis, we see that both homologous organs and vestigial organs provide evidence of common ancestry.
- Therefore, the correct answer is that the pair of evidences indicating common ancestry includes **homologous organs and vestigial organs**.

### Final Answer:
The pair of evidences that indicates common ancestry is **homologous organs and vestigial organs**.