Number of ascospores formed in Sacchromyces cerevisiae is

Options

A. 4
B. 8
C. 16
D. 2

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the number of ascospores formed in *Saccharomyces cerevisiae*, which is a type of yeast.

2. **Understand the Reproductive Process**: *Saccharomyces cerevisiae* primarily reproduces asexually through a process called budding. However, it can also reproduce sexually, leading to the formation of ascospores.

3. **Recognize the Role of Ascospores**: Ascospores are produced during sexual reproduction. In this process, the yeast undergoes meiosis, which is a type of cell division that reduces the chromosome number by half.

4. **Determine the Chromosome Number**: The initial organism is diploid (2n). During meiosis, this diploid cell divides to produce haploid (n) cells.

5. **Meiotic Division Outcome**: In meiosis, one diploid cell (2n) divides to form four haploid cells (n). Therefore, from one meiotic division, four ascospores are produced.

6. **Select the Correct Answer**: Given the options (4, 8, 16, 2), the correct answer is 4, as this is the number of ascospores formed from the meiotic division in *Saccharomyces cerevisiae*.

**Final Answer**: The number of ascospores formed in *Saccharomyces cerevisiae* is **4**.

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