Mendelism was rediscovered by
I. Morgan
II. De Vries
III. Correns
IV. Tschermak
Choose the correct option

Options

A. I,III and IV
B. I,II, III and IV
C. II, III and IV
D. I, II and III

Answer

To solve the question of who rediscovered Mendelism, we can follow these steps:

### Step 1: Understand the Context of Mendelism
Mendelism refers to the principles of inheritance discovered by Gregor Mendel through his experiments with pea plants. His work on the laws of inheritance, including the concepts of dominant and recessive traits, went largely unrecognized until later.

**Hint:** Research the significance of Gregor Mendel's work and its initial reception in the scientific community.

### Step 2: Identify the Key Scientists
The question lists four scientists: Morgan, De Vries, Correns, and Tschermak. We need to determine which of these scientists were involved in the rediscovery of Mendel's work.

**Hint:** Look into the contributions of each scientist listed in the question to understand their relevance to Mendelism.

### Step 3: Review Historical Rediscovery
In 1900, three scientists—Hugo De Vries, Carl Correns, and Erich von Tschermak—independently rediscovered Mendel's work. They confirmed Mendel's laws of inheritance through their own experiments.

**Hint:** Focus on the year 1900 and the contributions of De Vries, Correns, and Tschermak to Mendel's principles.

### Step 4: Analyze Each Option
- **I. Morgan**: Known for his work on Drosophila and genetics, but not involved in the rediscovery of Mendelism.
- **II. De Vries**: One of the scientists who rediscovered Mendel's work.
- **III. Correns**: Another scientist who contributed to the rediscovery of Mendelism.
- **IV. Tschermak**: Also involved in the rediscovery of Mendel's principles.

**Hint:** Compare each scientist's contributions to determine who played a role in rediscovering Mendelism.

### Step 5: Conclusion
The correct answer includes De Vries, Correns, and Tschermak. Therefore, the correct option is the one that includes these three scientists.

**Final Answer:** The correct option is II, III, and IV (De Vries, Correns, and Tschermak).