The major event that occurs during the $Anaphase$ of mitosis,which brings about the equal distribution of chromosomes is

At the beginning of telophase,what undergoes decondensation?

At what phase of meiosis are there two cells,each with sister chromatids aligned at the spindle equator?

Choose the correct option regarding the duplication of organelles during the cell cycle:
$(1)$ Mitochondria and centrioles duplicate during the $(G_0 / G_1 / G_2)$ phase of interphase.

Choose the correct combination of options to select the correct statement for prophase:
$I.$ Chromosomal material condenses to form compact mitotic chromosomes.
$II.$ The assembly of mitotic spindle is initiated by the microtubules.
$III.$ Cells do not show organelles when viewed under the prophase.
$IV.$ The nucleolus or nucleoli degenerate completely.

The nuclear envelope disappears during ........... .