Segregation of Mendelian factors occurs during can be demonstrated by .

Options

A. Anaphase I
B. Anaphase II
C. Diplotene
D. Metaphase I

Answer

To answer the question "Segregation of Mendelian factors occurs during can be demonstrated by," we need to analyze the stages of meiosis and identify where the segregation of alleles occurs. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding Mendelian Factors**:
- Mendelian factors refer to genes that exist in pairs (alleles) and govern the inheritance of traits. Each individual carries two alleles for each gene, one inherited from each parent.

2. **Meiosis Overview**:
- Meiosis is the process of cell division that reduces the chromosome number by half, resulting in the formation of gametes (sperm and egg cells). It consists of two successive divisions: meiosis I and meiosis II.

3. **Stages of Meiosis**:
- Meiosis I includes several phases: Prophase I, Metaphase I, Anaphase I, and Telophase I.
- Meiosis II includes Prophase II, Metaphase II, Anaphase II, and Telophase II.

4. **Identifying Segregation**:
- Segregation of alleles occurs when homologous chromosomes are separated. This is crucial for ensuring that each gamete receives only one allele from each gene pair.

5. **Focus on Anaphase I**:
- During Anaphase I of meiosis, homologous chromosomes are pulled apart to opposite poles of the cell. This separation results in the segregation of the alleles carried on those chromosomes.

6. **Conclusion**:
- Therefore, the segregation of Mendelian factors can be demonstrated during **Anaphase I** of meiosis.

### Final Answer:
The segregation of Mendelian factors occurs during **Anaphase I** of meiosis.

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