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Multiple Choice
What is the primary function of spindle fibers during mitosis?
A
To separate sister chromatids and move them to opposite poles of the cell
B
To replicate DNA before cell division
C
To form the nuclear envelope around the daughter nuclei
D
To initiate cytokinesis by forming the cleavage furrow
Verified step by step guidance
1
Understand the context of mitosis: Mitosis is a process of cell division that results in two genetically identical daughter cells from a single parent cell. It involves several stages: prophase, metaphase, anaphase, and telophase.
Identify the role of spindle fibers: Spindle fibers are structures that form during cell division. They are composed of microtubules and are crucial for the movement of chromosomes.
Focus on the specific function during mitosis: During anaphase, spindle fibers are responsible for separating sister chromatids and pulling them towards opposite poles of the cell.
Differentiate between the options: The primary function of spindle fibers is not to replicate DNA, form the nuclear envelope, or initiate cytokinesis. These processes involve other cellular components and occur at different stages of cell division.
Conclude with the correct function: The primary function of spindle fibers during mitosis is to ensure that each daughter cell receives an identical set of chromosomes by separating sister chromatids and moving them to opposite poles of the cell.