Production of superior `F_(1)` hybrids is called

Options

A. Emasculation
B. Domestication
C. Inbreeding
D. Heterosis.

Answer

To answer the question "Production of superior F1 hybrids is called," we will analyze the options provided and determine the correct term associated with the production of these hybrids.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the term that describes the production of superior F1 hybrids. F1 hybrids are the first filial generation resulting from a cross between two genetically distinct parents.

2. **Evaluate the Options**:
- **Emasculation**: This term refers to the removal of stamens or anthers from a flower to prevent self-pollination. It is a technique used in breeding but does not describe the production of superior hybrids.
- **Domestication**: This is the process of taming wild animals or plants for human use. It does not relate to hybrid production.
- **Inbreeding**: This involves mating closely related organisms. While it can produce hybrids, it does not specifically lead to superior F1 hybrids, as it may lead to inbreeding depression.
- **Heterosis**: This term, also known as hybrid vigor, refers to the phenomenon where the offspring (F1 hybrids) exhibit superior qualities compared to their parents. This is the correct term for the production of superior F1 hybrids.

3. **Conclusion**: Based on the evaluation of the options, the correct answer is **heterosis**, as it specifically describes the production of superior F1 hybrids.

### Final Answer:
The production of superior F1 hybrids is called **heterosis**.

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