Which of these statements is true about meiosis I?

The stage preceding the stage during which crossing over takes place is __

During which stage does assembly of meiotic spindle take place?

What shape is the chiasmata?

In which direction does each chromatid move on separation of sister chromatids?

In which phase does the nuclear envelope disintegrate?

How many cells are formed at the end of meiosis I?

In which phase of the cell cycle does DNA replication take place?