Which is not a dominant trait studied by Mendel ?

Options

A. Stem height Tall
B. Flower colour Violet
C. Flower position Axial
D. Pod shape constricted

Answer

To solve the question "Which is not a dominant trait studied by Mendel?", we will follow these steps:

### Step 1: Understand Mendel's Experiments
Mendel conducted experiments on pea plants (Pisum sativum) and studied various traits. He identified dominant and recessive traits through his breeding experiments.

**Hint:** Remember that dominant traits are those that are visibly expressed in the organism, while recessive traits are not.

### Step 2: Identify the Traits Studied by Mendel
Mendel studied seven traits in pea plants, which included:
1. Stem height (Tall vs. Short)
2. Flower color (Violet vs. White)
3. Flower position (Axial vs. Terminal)
4. Pod shape (Inflated vs. Constricted)
5. Seed shape (Round vs. Wrinkled)
6. Seed color (Yellow vs. Green)
7. Pod color (Green vs. Yellow)

**Hint:** Focus on the pairs of traits Mendel studied to distinguish between dominant and recessive.

### Step 3: Determine the Dominant and Recessive Traits
From Mendel's findings:
- **Stem Height:** Tall (dominant) and Short (recessive)
- **Flower Color:** Violet (dominant) and White (recessive)
- **Flower Position:** Axial (dominant) and Terminal (recessive)
- **Pod Shape:** Inflated (dominant) and Constricted (recessive)

**Hint:** Recall that dominant traits are the ones that show up in the phenotype of the organism.

### Step 4: Identify the Non-Dominant Trait
Among the traits studied, the pod shape trait has "Constricted" as the recessive trait. Therefore, "Constricted" is not a dominant trait.

**Hint:** Look for the traits that are explicitly mentioned as recessive in Mendel's studies.

### Conclusion
The trait that is not dominant, as studied by Mendel, is **Constricted pod shape**.

**Final Answer:** Constricted pod shape is not a dominant trait studied by Mendel.