To analyse the genotype of an organism,it is made to:

Options

A. Self cross
B. Cross with recessive parent
C. Cross with dominant parent
D. Cross with another species

Answer

To analyze the genotype of an organism, the following steps can be taken:

### Step-by-Step Solution:

1. **Understand the Genotype**: The genotype refers to the genetic makeup of an organism, which can be homozygous (having two identical alleles) or heterozygous (having two different alleles).

2. **Identify the Organism**: Let's say we have an organism (e.g., a plant) that exhibits a dominant phenotype (e.g., tall).

3. **Determine the Cross**: To analyze the genotype of this organism, we need to perform a specific type of genetic cross.

4. **Perform a Test Cross**: The most effective way to determine whether the organism is homozygous dominant or heterozygous is to perform a test cross. This involves crossing the organism with a recessive individual (e.g., a dwarf plant).

5. **Analyze the Offspring**:
- If the organism is **homozygous tall** (TT), all offspring will exhibit the dominant phenotype (tall).
- If the organism is **heterozygous tall** (Tt), the offspring will show a 1:1 ratio of tall to dwarf (50% tall and 50% dwarf).

6. **Conclusion**: By analyzing the phenotypes of the offspring from the test cross, we can determine the genotype of the original organism.

### Final Answer:
To analyze the genotype of an organism, it is made to **cross with a recessive parent** (Option B).

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