The cytological event that corresponds to Mendel's law of independent assortment is seen in:

Options

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

Answer

To solve the question regarding the cytological event that corresponds to Mendel's law of independent assortment, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Mendel's Law of Independent Assortment**:
- Mendel's law states that alleles for different traits segregate independently of one another during the formation of gametes. This means that the inheritance of one trait will not affect the inheritance of another trait.

2. **Identify the Relevant Stage of Meiosis**:
- Meiosis is the process that leads to the formation of gametes, and it includes two main divisions: Meiosis I and Meiosis II. The law of independent assortment is specifically related to how chromosomes are separated during these divisions.

3. **Focus on Meiosis I**:
- During Meiosis I, homologous chromosomes are separated. This is crucial because the independent assortment of alleles occurs when these homologous chromosomes line up and are pulled apart.

4. **Determine the Specific Phase**:
- The specific phase of Meiosis I where the independent assortment occurs is **Anaphase I**. During Anaphase I, homologous chromosomes (each consisting of two sister chromatids) are pulled to opposite poles of the cell. This separation is what allows for the independent assortment of alleles.

5. **Contrast with Other Phases**:
- In **Metaphase**, chromosomes line up at the equatorial plate, but no separation occurs. In **Anaphase II**, sister chromatids are separated, but this does not relate to the independent assortment of different alleles.

6. **Conclusion**:
- Therefore, the cytological event that corresponds to Mendel's law of independent assortment is observed during **Anaphase I** of meiosis.

### Final Answer:
The cytological event that corresponds to Mendel's law of independent assortment is seen in **Anaphase I** of meiosis.

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