The genes controlling seven traits in pea studied by Mendel were later found to be located on following number of chromosomes

Options

A. Seven
B. Four
C. Five
D. Six

Answer

To solve the question regarding the number of chromosomes that control the seven traits in peas studied by Mendel, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**:
The question asks for the number of chromosomes that contain the genes responsible for seven traits in pea plants, as identified by Mendel.

2. **Identifying the Traits**:
Mendel studied several traits in pea plants, including seed color, flower color, plant height, pod shape, pod color, seed shape, and inflorescence position.

3. **Chromosome Mapping**:
Research has shown that these traits are located on specific chromosomes. We need to determine how many different chromosomes are involved in controlling these traits.

4. **Listing the Chromosomes**:
- **Chromosome 1**: Contains genes for seed color and flower color.
- **Chromosome 4**: Contains genes for height, inflorescence, and pod shape.
- **Chromosome 5**: Contains genes for pod color.
- **Chromosome 7**: Contains genes for seed shape.

5. **Counting the Chromosomes**:
From the above information, we can see that the genes controlling the seven traits are located on four different chromosomes: 1, 4, 5, and 7.

6. **Conclusion**:
Therefore, the number of chromosomes that control the seven traits in pea plants is **4**.

### Final Answer:
The genes controlling seven traits in pea studied by Mendel were later found to be located on **4 chromosomes**.