A cross between `F_(1)` plant with a plant which is phenotypically and genotypicallysimilar to any parent is called

Options

A. Test cross
B. Back cross
C. Hybrid cross
D. Imbred cross

Answer

To solve the question regarding the type of cross between an F1 plant and a plant that is phenotypically and genotypically similar to any parent, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terminology**:
- **F1 Plant**: This refers to the first filial generation, which is the offspring resulting from a cross between two parental (P) plants.
- **Phenotypically Similar**: This means that the plant looks similar in appearance (traits) to one of the parents.
- **Genotypically Similar**: This means that the genetic makeup (genotype) of the plant is the same as that of one of the parents.

2. **Identify the Types of Crosses**:
- **Test Cross**: This is a cross between an individual with a dominant phenotype (but unknown genotype) and a homozygous recessive individual. It helps determine the genotype of the dominant phenotype.
- **Back Cross**: This is a cross between an F1 individual and one of its parents or an individual genetically similar to its parent.
- **Hybrid Cross**: This refers to a cross between two different varieties or species.
- **Inbred Cross**: This involves mating between closely related individuals, often within the same strain.

3. **Analyze the Given Cross**:
- The question specifies a cross between an F1 plant and a plant that is phenotypically and genotypically similar to any parent. This indicates that the F1 plant is being crossed with a plant that has a known genotype (similar to one of the parents).

4. **Determine the Correct Answer**:
- Since the F1 plant is being crossed with a plant that is similar to one of the parents, this scenario fits the definition of a **Back Cross**. The back cross is specifically designed to determine the genotype of the F1 plant by crossing it with a parent or a similar genotype.

5. **Final Answer**:
- The correct answer to the question is **Back Cross**.