One of the causes of variation known by early agriculturists, was hidden in

Options

A. Formation of deploid gametes
B. Fusion of identical gametes
C. sexual reproduction
D. Both (1) & (2)

Answer

To solve the question "One of the causes of variation known by early agriculturists, was hidden in," we need to analyze the options provided and understand the concept of variation in the context of genetics and reproduction.

### Step-by-Step Solution:

1. **Understanding Variation**:
- Variation refers to the differences in traits among individuals within a population. It is crucial for the process of evolution and adaptation.

2. **Identifying the Source of Variation**:
- Variations arise primarily due to genetic factors. These genetic factors are influenced by the mixing of genes during reproduction.

3. **Types of Reproduction**:
- There are two main types of reproduction: asexual and sexual.
- **Asexual Reproduction**: Involves a single organism producing offspring that are genetically identical to itself. This does not lead to variation.
- **Sexual Reproduction**: Involves the fusion of male and female gametes, leading to a combination of genetic material from both parents. This process introduces variation.

4. **Analyzing the Options**:
- The question likely provides multiple-choice answers. We need to evaluate each option to find the one that aligns with the concept of variation.
- **Option 1**: Formation of diploid gametes - This refers to asexual reproduction and does not contribute to variation.
- **Option 2**: Asexual reproduction - As mentioned, this does not result in variation.
- **Option 3**: Sexual reproduction - This is the correct answer as it leads to genetic mixing and variation.

5. **Conclusion**:
- Based on the analysis, the cause of variation known by early agriculturists is primarily hidden in **sexual reproduction**.

### Final Answer:
The correct answer is **sexual reproduction**.

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