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Multiple Choice
During anaphase of mitosis, which of the following structures are pulled apart toward opposite poles of the cell?
A
Centrioles
B
Nuclear envelopes
C
Sister chromatids
D
Homologous chromosomes
Verified step by step guidance
1
Understand the context of the question: Anaphase is a stage in mitosis, which is the process of cell division that results in two identical daughter cells. During anaphase, specific structures are separated and moved to opposite poles of the cell.
Recall the key events of anaphase: During this phase, the sister chromatids (identical copies of a chromosome connected by a centromere) are pulled apart by the spindle fibers toward opposite poles of the cell.
Differentiate between the options provided: Centrioles are involved in organizing spindle fibers but are not pulled apart. Nuclear envelopes disassemble earlier in mitosis during prophase and are not involved in anaphase. Homologous chromosomes separate during meiosis, not mitosis.
Focus on the correct structure: Sister chromatids are the structures that are pulled apart during anaphase of mitosis. This ensures that each daughter cell receives an identical set of chromosomes.
Summarize the process: The spindle fibers attach to the centromeres of the sister chromatids and shorten, pulling the chromatids to opposite poles of the cell, ensuring equal distribution of genetic material.