The genes controlling the seven pea characters studied by Mendel are now known to located on how many different chromosomes?

Options

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

Answer

To determine how many different chromosomes the genes controlling the seven pea characters studied by Mendel are located on, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Characters Studied by Mendel**:
Mendel studied seven characters in pea plants. These characters are:
- Plant height
- Flower color
- Pod color
- Pod shape
- Seed shape
- Seed color

2. **Locate the Genes on Chromosomes**:
- **Plant height**: Located on the 4th chromosome.
- **Flower color**: Located on the 1st chromosome.
- **Pod color**: Located on the 5th chromosome.
- **Pod shape**: Located on the 4th chromosome.
- **Seed shape**: Located on the 7th chromosome.
- **Seed color**: Located on the 1st chromosome.

3. **Count the Different Chromosomes**:
Now, we will list the chromosomes identified:
- 1st chromosome (Flower color, Seed color)
- 4th chromosome (Plant height, Pod shape)
- 5th chromosome (Pod color)
- 7th chromosome (Seed shape)

4. **Total Different Chromosomes**:
From the above, we can see that the genes for the seven characters are located on **four different chromosomes**: 1, 4, 5, and 7.

### Final Answer:
The genes controlling the seven pea characters studied by Mendel are located on **four different chromosomes**.

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