Which fungi are commonly used in biochemical and genetic work ?

Options

A. Claviceps and puccinia
B. Neurospora and Saccharomyces
C. Aspergillus and Alternaria
D. Penicillium and Rhizopus

Answer

To answer the question "Which fungi are commonly used in biochemical and genetic work?", we can analyze the options provided and identify the fungi that are most suitable for such work based on their characteristics.

### Step-by-Step Solution:

1. **Understanding the Options**:
- The options given are:
- A: Claviceps and Pusinia
- B: Neurospora and Saccharomyces
- C: Aspergillus and Alternaria
- D: Penicillium and Rhizopus

2. **Identifying Key Characteristics**:
- Fungi used in biochemical and genetic work should have certain characteristics such as ease of growth, short life cycles, and the ability to manipulate genetically.

3. **Analyzing Neurospora**:
- Neurospora is known for being easy to grow and has a simple lifestyle. It is haploid, meaning it has only one set of chromosomes, which simplifies genetic studies.

4. **Analyzing Saccharomyces**:
- Saccharomyces, particularly Saccharomyces cerevisiae (brewer's yeast), is a single-celled organism that grows quickly and can be easily cultured. It can also be genetically manipulated, allowing for the addition or deletion of genes.

5. **Conclusion**:
- Based on the analysis, both Neurospora and Saccharomyces are extensively used in biochemical and genetic work due to their favorable characteristics. Therefore, the correct answer is **option B: Neurospora and Saccharomyces**.

### Final Answer:
**Neurospora and Saccharomyces are commonly used in biochemical and genetic work.**