Question

1. before cytokinesis can occur what must be completed?
2. put the following in the correct order and draw a picture of each: prophase, interphase, anaphase, telophase, and metaphase? (students should be prepared to answer questions asking what occurs at each of these phases)

Explanation:

Question 42

Cytokinesis is the division of the cytoplasm. Before it occurs, the nuclear division (mitosis or meiosis) must be completed, specifically the separation of chromosomes and the formation of new nuclei (telophase of mitosis/meiosis). The key event before cytokinesis is the completion of mitotic (or meiotic) nuclear division, including the proper segregation of genetic material.

The cell cycle's mitotic phase (M - phase) follows interphase (where the cell prepares, replicates DNA). The correct order of mitotic phases is: Interphase (not a mitotic phase but precedes it, involves G1, S, G2), then Prophase (chromosomes condense, spindle forms), Metaphase (chromosomes align at equator), Anaphase (sister chromatids separate), Telophase (nuclear envelopes reform, chromosomes decondense).

Answer:

Before cytokinesis can occur, the nuclear division (mitosis or meiosis, including the separation of chromosomes and formation of new nuclei) must be completed.

Question 43