Somatic cell hybrids are produced with the help of
(a) Polyhydroxy glycol
(b) Polyethylene glycol
(c) Polycinyl glycol
(d) Polypropylene glycol

Options

A. Polyhydroxy glycol
B. Polyethylene glycol
C. Poltycinyl glycol
D. Polypropylene glycol.

Answer

To solve the question regarding which chemical is used to produce somatic cell hybrids, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept**: Somatic cell hybrids are produced through a process called somatic fusion or protoplast fusion, which involves fusing cells from two different plant species to create a hybrid.

2. **Identify the Chemicals Listed**: The options provided are:
- (a) Polyhydroxy glycol
- (b) Polyethylene glycol
- (c) Polysinyl glycol
- (d) Polypropylene glycol

3. **Research the Role of Each Chemical**:
- Polyhydroxy glycol: Not commonly associated with somatic cell fusion.
- Polyethylene glycol (PEG): Widely recognized as a chemical that facilitates the fusion of protoplasts in plant genetics.
- Polysinyl glycol: Not a recognized agent for somatic cell hybridization.
- Polypropylene glycol: Not used for this purpose.

4. **Determine the Correct Answer**: Based on the information gathered, polyethylene glycol (PEG) is the chemical that is specifically used to produce somatic cell hybrids.

5. **Select the Answer**: Therefore, the correct answer is (b) Polyethylene glycol.

### Final Answer:
(b) Polyethylene glycol