QQuestionBiology
QuestionBiology
What happens during cytokinesis?
A. The cell divides into two cells.
B. The number of chromosomes doubles.
C. Two separate nuclei form.
D. The chromatids are pulled apart.
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Answer
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Step 1:I'll solve this problem step by step, focusing on the process of cytokinesis in cell division.
Step 2:: Understanding Cytokinesis
Cytokinesis is the final stage of cell division where the cytoplasm of a single cell divides into two separate daughter cells. This occurs after nuclear division (mitosis or meiosis) is complete.
Step 3:: Key Characteristics of Cytokinesis
- It physically separates the cytoplasm and organelles of the parent cell - Ensures that each new daughter cell receives approximately equal cellular contents - Occurs differently in animal and plant cells due to cell wall differences
Step 4:: Process in Animal Cells
In animal cells, cytokinesis happens through: - Formation of a contractile ring of actin and myosin filaments - The ring pinches the cell membrane inward - This creates a cleavage furrow that eventually splits the cell into two
Step 5:: Process in Plant Cells
In plant cells, cytokinesis occurs through: - Formation of a cell plate in the center of the cell - The cell plate grows outward and eventually forms a new cell wall
Step 6:: Analyzing the Answer Choices
- A is CORRECT: The cell divides into two cells - B is incorrect: Chromosome doubling occurs during DNA replication - C is incorrect: Nuclear division (mitosis) forms separate nuclei - D is incorrect: Chromatid separation occurs during anaphase
Final Answer
The cell divides into two cells.
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