Fertilization is depicted by the condition :

Options

A. Haploid to diploid
B. Diploid to triploid
C. Diploid to haploid
D. Diploid to hexaploid

Answer

To solve the question "Fertilization is depicted by the condition:", we need to analyze the options given and understand the process of fertilization in biological terms.

### Step-by-Step Solution:

1. **Understanding Fertilization**:
- Fertilization is defined as the fusion of male and female gametes. The male gamete is typically a sperm, and the female gamete is an egg or ovum.

2. **Gamete Composition**:
- Both male and female gametes are haploid in nature. This means they contain one set of chromosomes (n). These gametes are produced through a process called meiosis.

3. **Formation of Zygote**:
- When the haploid male and female gametes fuse during fertilization, they form a zygote. The zygote is diploid (2n) because it contains two sets of chromosomes—one from the male gamete and one from the female gamete.

4. **Analyzing the Options**:
- **Haploid to Diploid (n to 2n)**: This is the correct depiction of fertilization since it describes the transition from the haploid state of gametes to the diploid state of the zygote.
- **Diploid to Triploid**: This is incorrect; fertilization does not lead to a triploid condition.
- **Diploid to Haploid**: This is also incorrect; this condition occurs during gametogenesis, not fertilization.
- **Diploid to Hexaploid**: This is incorrect as well; fertilization does not lead to a hexaploid state.

5. **Conclusion**:
- The correct answer is **Haploid to Diploid** as it accurately represents the process of fertilization.

### Final Answer:
Fertilization is depicted by the condition: **Haploid to Diploid (n to 2n)**.