Atavistic organs indicate

Options

A. Convergent evolution
B. Parallel evolution
C. The evolution from remote ancestors
D. Homoplasy

Answer

**Step-by-Step Solution:**

1. **Understanding Atavistic Organs**: Atavistic organs are those structures that reappear in an organism that were present in its remote ancestors but are not typically found in the more recent generations. This phenomenon is known as atavism.

2. **Analyzing the Options**:
- **Option A: Conversion Evolution**: This refers to different species developing similar traits independently due to similar environmental pressures, despite having different evolutionary origins. This does not relate to the reappearance of ancestral traits, so this option is incorrect.
- **Option B: Parallel Evolution**: This involves two independent species evolving similar traits due to similar environmental conditions. Like conversion evolution, this does not involve the reappearance of ancestral traits, making this option also incorrect.
- **Option C: Evolution from Remote Ancestors**: This option suggests that atavistic organs indicate a return to traits from distant ancestors. This aligns with the definition of atavism, making this option correct.
- **Option D: Homoplasy**: This refers to traits that are similar due to convergent evolution rather than shared ancestry. Since atavistic organs are about ancestral traits reappearing, this option is also incorrect.

3. **Conclusion**: The correct answer is **Option C: Evolution from remote ancestors**, as atavistic organs indicate the reappearance of ancestral characteristics in modern organisms.

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