AP BIOLOGY

Detailed explanation-1: -It is crucial that the two major events of M phase-nuclear division (mitosis) and cytoplasmic division (cytokinesis)-occur in the correct sequence (see Figure 18-1). It would be catastrophic if cytokinesis occurred before all of the chromosomes had segregated during mitosis.

Detailed explanation-2: -Mitosis, or the M phase, involves nuclear division and cytokinesis, where two identical daughter cells are produced. Mitosis involves prophase, prometaphase, metaphase, anaphase, and telophase. Finally, cytokinesis leads to cell division.

Detailed explanation-3: -These basic events of mitosis include chromosome condensation, formation of the mitotic spindle, and attachment of chromosomes to the spindle microtubules. Sister chromatids then separate from each other and move to opposite poles of the spindle, followed by the formation of daughter nuclei.