Which one of the following pairs is correctly matched

Options

A. `{:("Anaphase I",-,"Homologous chromosomes are separated"):}`
B. `{:("Metaphase I",-,"Pairing of maternal and paternal homologous chromosomes takes place"):}`
C. `{:("Interphase",-,"A nuclear envelope encloses each haploid set of chromosomes"):}`
D. `{:("Prophase I",-,"Non-homologous chromosomes are separated"):}`

Answer

To determine which pair is correctly matched, we will analyze each option based on the stages of meiosis and their characteristics.

### Step-by-Step Solution:

1. **Analyze Option A: NFA is 1**
- In NFA (Nuclear Fission Anaphase) 1, homologous chromosomes are separated and pulled to opposite poles of the cell. This description accurately matches the function of NFA 1.
- **Conclusion**: This option is correct.

2. **Analyze Option B: Metaphase 1**
- In Metaphase 1, homologous chromosomes align at the metaphase plate, but they are not paired as maternal and paternal chromosomes. Instead, they are arranged in pairs (tetrads) and are fully condensed.
- **Conclusion**: This option is incorrect.

3. **Analyze Option C: Interphase**
- During Interphase, the cell is preparing for division, and the nuclear envelope surrounds the nucleus. However, it does not enclose a haploid set of chromosomes because the chromosomes are not yet visible; they are in the form of chromatin.
- **Conclusion**: This option is incorrect.

4. **Analyze Option D: Prophase 1**
- In Prophase 1, homologous chromosomes undergo pairing (synapsis) and crossing over occurs. Non-homologous chromosomes are not separated at this stage; rather, homologous chromosomes are paired.
- **Conclusion**: This option is incorrect.

### Final Conclusion:
The only correct match is **Option A: NFA is 1**, where homologous chromosomes are separated.

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