Which hormone is obtained from herring sperm DNA ?

Options

A. Cytokinin
B. Auxin
C. Giberellin
D. Ethylene

Answer

To solve the question "Which hormone is obtained from herring sperm DNA?", we can follow these steps:

### Step 1: Identify the Source
- Herring is a type of fish, and the question specifies that we are looking for a hormone obtained from herring sperm DNA.

**Hint:** Think about what substances can be derived from the DNA of organisms, especially in the context of plant hormones.

### Step 2: Understand the Process
- The DNA isolated from herring sperm was subjected to a process called autoclaving, which is a method of sterilization. This process led to the discovery of a specific compound.

**Hint:** Consider how the treatment of DNA can lead to the discovery of new compounds or hormones.

### Step 3: Identify the Compound Discovered
- The compound discovered from the autoclaved herring sperm DNA is kinetin, which is a modified form of adenine. Kinetin is classified as a type of cytokinin.

**Hint:** Recall the classification of hormones and what role they play in plants.

### Step 4: Define Cytokinins
- Cytokinins are a class of plant hormones that promote cell division (cytokinesis) and are essential for various growth processes in plants.

**Hint:** Think about the functions of different plant hormones and how they relate to growth and development.

### Step 5: Conclusion
- Based on the information gathered, the hormone obtained from herring sperm DNA is identified as cytokinin, specifically kinetin.

**Final Answer:** The hormone obtained from herring sperm DNA is **cytokinin**.