A cross between `F_(1)` hybrid and its homozygous recessive parent is called

Options

A. Out cross
B. Test cross
C. Monohybrid cross
D. Dihybrid cross

Answer

To solve the question, "A cross between F1 hybrid and its homozygous recessive parent is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **F1 Hybrid**: This is the first filial generation resulting from a cross between two different parental lines.
- **Homozygous Recessive Parent**: This refers to an individual that has two identical recessive alleles for a trait.

2. **Identify the Cross**:
- The question specifically asks about a cross between the F1 hybrid and a homozygous recessive parent.

3. **Analyze the Options**:
- **Out Cross**: This is a cross between an F1 hybrid and a dominant parent, not a recessive one. Therefore, this option is incorrect.
- **Test Cross**: This is defined as a cross between an F1 hybrid and a homozygous recessive parent. This matches the description in the question, making it a likely correct option.
- **Monohybrid Cross**: This involves a cross between two individuals differing in one trait. It does not specifically refer to the F1 hybrid and a recessive parent, so this option is incorrect.
- **Dihybrid Cross**: This involves a cross between individuals differing in two traits. Like the monohybrid cross, it does not fit the description in the question, making this option incorrect.

4. **Conclusion**:
- The correct answer is **Test Cross**, as it is the only option that accurately describes the cross between an F1 hybrid and its homozygous recessive parent.

### Final Answer:
The cross between F1 hybrid and its homozygous recessive parent is called a **Test Cross**.

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