M Phase
The phase involving nuclear division (karyokinesis) and cytoplasmic division (cytokinesis).
What is M Phase?
The division of the nucleus during cell division.
Key points
- Understand the two main events of M phase: karyokinesis and cytokinesis.
- Identify and describe the stages of mitosis (Prophase, Metaphase, Anaphase, Telophase).
- Explain the process of cytokinesis in animal and plant cells.
- Recognize the significance of M phase in the overall cell cycle and organismal life.
Common exam trap
Confusing the order of mitotic stages (Prophase, Metaphase, Anaphase, Telophase).
Definitions
- Term
Karyokinesis
- Meaning
The division of the nucleus during cell division.
- Term
Cytokinesis
- Meaning
The division of the cytoplasm to form two daughter cells.
- Term
Mitosis
- Meaning
A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus.
- Term
Metaphase Plate
- Meaning
An imaginary plane equidistant from the two poles of a dividing cell, along which the chromosomes align during metaphase.
- Term
Cleavage Furrow
- Meaning
A groove formed during cytokinesis in animal cells, which deepens to divide the cytoplasm.
- Term
Cell Plate
- Meaning
A structure that forms during cytokinesis in plant cells, eventually developing into a new cell wall.
Learning objectives
Understand the two main events of M phase: karyokinesis and cytokinesis.
Identify and describe the stages of mitosis (Prophase, Metaphase, Anaphase, Telophase).
Explain the process of cytokinesis in animal and plant cells.
Recognize the significance of M phase in the overall cell cycle and organismal life.
Prerequisites
Cell Cycle
Interphase (G1, S, G2 phases)
Chromosomes and their structure
Centrioles and Centrosomes
Common mistakes
Confusing the order of mitotic stages (Prophase, Metaphase, Anaphase, Telophase).
Misunderstanding the role of spindle fibers and centromeres.
Incorrectly describing cytokinesis in plant vs. animal cells.
Overlooking the importance of interphase preparation for M phase.
Keywords
M phase
Mitosis
Karyokinesis
Cytokinesis
Prophase
Metaphase
Anaphase
Telophase
Cell Division
Daughter Cells
Spindle Fibers
Centromere
Cell Plate
Cleavage Furrow
Practice preview
Which of the following events does NOT occur during M phase of the cell cycle?…
easy
The separation of sister chromatids occurs during which sub-phase of M phase?…
easy
Cytokinesis in animal cells typically differs from cytokinesis in plant cells in which of the following aspects?…
easy