During prophase, a stage in the cell cycle,
a
the nuclear envelope breaks down.
b
the chromosomes in the cell begin to move.
c
the cell begins to separate into two new cells.
d
the cell duplicates its genetic material.
a
the nuclear envelope breaks down.
b
the chromosomes in the cell begin to move.
c
the cell begins to separate into two new cells.
d
the cell duplicates its genetic material.