Mitosis is an organized series of events ultimately leading to the production of
ID: 41328 • Letter: M
Question
Mitosis is an organized series of events ultimately leading to the production of two daughter cells. Complete the table below by indicating what phase of the cell cycle each step occurs at. Bear in mind that some steps will be present in more than one phase of the cell cycle. If this step occurs at any point (beginning, middle, or end) of that cell cycle phase, include it.
Cell cycle phases:
G1 S G2 prophase prometaphase metaphase anaphase telophase
Cell cycle phase(s) that steps are present in
Nuclear envelope breaks down
Exocytosis and endocytosis of vesicles
Cohesins are attached to the chromatids
The MTOC is the spindle pole
Kinesin-13 is active
Please tell me which of the cell cycle phases is in each of these steps. There are more than one for each step
Explanation / Answer
Nuclear envelope breaks down : G2
Exocytosis and endocytosis of vesicles: G1
Cohesins are attached to the chromatids : prometaphase, metaphase
The MTOC is the spindle pole: prophase, prometaphase
Kinesin-13 is active : metaphase, anaphase