Segregation of Mendelian factors (no linkage no crossing over) occurs during:

Options

A. anaphase-I
B. anaphase-II
C. diplotene
D. metaphase-I

Explanation

**Step-by-Step Solution:**

1. **Understanding Mendel's Law of Segregation**:
- Mendel's law states that during the formation of gametes, the two alleles for a trait segregate from each other. This means that each gamete will receive one allele from each gene pair.

2. **Identifying the Phases of Meiosis**:
- Meiosis consists of two main stages: Meiosis I and Meiosis II. Each of these stages has several phases: Prophase, Metaphase, Anaphase, and Telophase.

3. **Analyzing Meiosis I**:
- In Meiosis I, homologous chromosomes are separated. This is where the segregation of alleles occurs.

4. **Focusing on Anaphase I**:
- During Anaphase I, the homologous chromosomes are pulled apart to opposite poles of the cell. This is the critical phase where the segregation of Mendelian factors occurs.

5. **Conclusion**:
- Therefore, the segregation of Mendelian factors occurs during Anaphase I of meiosis.

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

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