If two sympatric species occupy very similar niche under natural condition, one would expect -

Options

A. The species to hybridize
B. Intense interspecific competition to occur
C. A mutualistic symbiosis to develop
D. Extensive cooperation to occur

Answer

### Step-by-Step Solution:

1. **Understanding Sympatric Species**:
- Sympatric species are closely related species that inhabit the same geographical area. This means they share the same habitat and have overlapping ranges.

2. **Defining Niche**:
- A niche refers to the role or function of an organism within its ecosystem, including its habitat, resource use, and interactions with other organisms.

3. **Similar Niches**:
- If two sympatric species occupy very similar niches, it implies that they have similar resource requirements, such as food, shelter, and other ecological needs.

4. **Competition for Resources**:
- When two species compete for the same resources, it leads to competition. In this case, the competition is termed inter-specific competition, which occurs between different species.

5. **Outcomes of Competition**:
- In situations where two species compete for the same resources, one species may become dominant over the other, or both may adapt to minimize competition. However, because they are closely related, it is less likely that one will completely outcompete the other.

6. **Expectation of Intense Competition**:
- Given the close relation and similar niches, one would expect to see intense competition between these species. This competition can manifest in aggressive behaviors and resource exploitation strategies.

7. **Conclusion**:
- Therefore, if two sympatric species occupy very similar niches under natural conditions, one would expect intense inter-specific competition to occur.

### Final Answer:
Intense inter-specific competition to occur.

---