Who considered DNA as a “Nuclein” ?

Options

A. james Watson
B. Friedrich Meischer
C. Francis Crick
D. Rosalind Franklin

Answer

To answer the question "Who considered DNA as a 'Nuclein'?", we can follow these steps:

### Step 1: Understand the Term "Nuclein"
- The term "nuclein" was historically used to refer to what we now know as DNA. It was a name given to the substance found in the nucleus of cells.

### Step 2: Identify the Scientist
- The scientist who first isolated this substance and referred to it as "nuclein" is Frederick Miescher. He conducted his research in the late 19th century.

### Step 3: Context of the Discovery
- In 1869, Miescher isolated nuclein from the nuclei of white blood cells. He discovered that this substance was distinct from proteins and had unique properties.

### Step 4: Conclusion
- Therefore, the correct answer to the question is Frederick Miescher, who is recognized for identifying DNA as "nuclein."

### Final Answer
- **Frederick Miescher** is the scientist who considered DNA as "nuclein."

---