Sympatric speciation develops reproductive isolation without

Options

A. Geographic
B. Barrier to mating
C. Barrier to gene flow
D. Genetic change

Answer

**Step-by-Step Solution:**

1. **Understanding Sympatric Speciation**:
- Sympatric speciation occurs when new species arise from a single ancestral species while inhabiting the same geographical area. This means that the speciation process does not involve physical barriers separating populations.

2. **Identifying Reproductive Isolation**:
- Reproductive isolation is a key concept in speciation. It refers to mechanisms that prevent different species from interbreeding, which can occur through various means such as behavioral differences, temporal differences, or ecological niches.

3. **Geographic Barriers**:
- In the context of sympatric speciation, the absence of geographic barriers is crucial. This means that the populations are not separated by physical barriers like mountains or rivers, allowing them to coexist in the same environment.

4. **Conclusion**:
- Given the options provided in the question, the correct answer is that sympatric speciation develops reproductive isolation without geographic barriers. Therefore, the answer is "geographic barrier."

**Final Answer**: Sympatric speciation develops reproductive isolation without geographic barriers.

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