Multiple Choice
Mitosis occurs in which layer of the epidermis?
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3. Energy & Cell Processes
Phases of Mitosis
Multiple Choice
In which phase of mitosis does the nuclear envelope break down and spindle fibers form?
A
Metaphase
B
Prophase
C
Anaphase
D
Telophase
Verified step by step guidance1
Understand the stages of mitosis: Mitosis is divided into several phases: prophase, metaphase, anaphase, and telophase.
Identify the key events in prophase: During prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down.
Recognize the formation of spindle fibers: In prophase, spindle fibers start to form from the centrosomes, which are crucial for chromosome movement.
Differentiate between the phases: Metaphase is characterized by chromosomes aligning at the cell's equator, anaphase involves the separation of sister chromatids, and telophase is when the nuclear envelope re-forms around the separated chromosomes.
Conclude that the phase where the nuclear envelope breaks down and spindle fibers form is prophase, as these are the defining events of this stage.
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