During interphase prior to meiosis I, what key event occurs that is essential for the subsequent meiotic divisions?

• A. DNA is replicated, producing sister chromatids for each chromosome before meiosis I begins.
• B. Sister chromatids separate at the centromeres, forming haploid gametes.
• C. Homologous chromosomes separate into two daughter cells, reducing the chromosome number by half.
• D. Crossing over occurs between non-sister chromatids, creating chiasmata during prophase I.

Answer: (A)