Which of the following is used extensively in biochemical and genetical work?

Options

A. Agaricus
B. Altemaria
C. Neurospora
D. Mucor

Answer

To determine which organism is used extensively in biochemical and genetic work, we will analyze the options provided and evaluate their characteristics.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- 1. Agaricus
- 2. Ultramaria
- 3. Neurospora
- 4. Mucor

2. **Understand the Context**: The question asks for an organism that is extensively used in biochemical and genetic research. This typically refers to organisms that are easy to manipulate genetically and have a simple life cycle.

3. **Evaluate Each Organism**:
- **Agaricus**: This is a genus of mushrooms (e.g., Agaricus bisporus, the common button mushroom). While it has some uses in research, it is not primarily known for genetic studies.
- **Ultramaria**: This option seems to be a typographical error or a less-known term. It does not appear to be a widely recognized organism in biochemical or genetic work.
- **Neurospora**: This is a genus of fungi, specifically Neurospora crassa, which is widely used in genetic research. It is haploid, meaning it has a single set of chromosomes, making it easier to study genetic mutations and inheritance patterns.
- **Mucor**: This is another genus of fungi, but it is not as commonly used as Neurospora in genetic studies.

4. **Select the Best Option**: Based on the evaluation, **Neurospora** is the organism that is extensively used in biochemical and genetic work due to its simple life cycle and haploid nature.

5. **Conclusion**: Therefore, the correct answer is **3. Neurospora**.