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Questions and Answers
What happens during anaphase of mitosis?
What happens during anaphase of mitosis?
- Chromosomes align at the equator of the spindle
- The centromere splits into two (correct)
- The nuclear envelopes form around each nucleus
- Chromosomes condense into chromatids
Which phase is characterized by chromosomes aligned at the equator of the spindle?
Which phase is characterized by chromosomes aligned at the equator of the spindle?
- Telophase
- Prometaphase
- Prophase
- Metaphase (correct)
What marks the beginning of prometaphase in mitosis?
What marks the beginning of prometaphase in mitosis?
- Centromere splitting into two
- Disassembly of the nuclear envelope (correct)
- Chromosome alignment at the equator
- Formation of the mitotic spindle
Which phase involves the formation of nuclear envelopes around each nucleus?
Which phase involves the formation of nuclear envelopes around each nucleus?
What is a key feature of metaphase in mitosis?
What is a key feature of metaphase in mitosis?
During which phase of the cell cycle does DNA replication occur?
During which phase of the cell cycle does DNA replication occur?
What is the specialized resting state for cells in G1 that are not committed to DNA synthesis?
What is the specialized resting state for cells in G1 that are not committed to DNA synthesis?
How many phases can mitosis be divided into based on progress made in the overall nuclear division?
How many phases can mitosis be divided into based on progress made in the overall nuclear division?
What happens to chromosome strands upon completion of DNA synthesis?
What happens to chromosome strands upon completion of DNA synthesis?
What is the main function of the gap between S phase and mitosis (G2 phase)?
What is the main function of the gap between S phase and mitosis (G2 phase)?
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Study Notes
Mitosis Phases
- Anaphase is characterized by sister chromatids separating and moving to opposite poles of the cell.
Metaphase
- Chromosomes are aligned at the equator of the spindle during metaphase.
- A key feature of metaphase is the alignment of chromosomes at the center of the cell.
Prometaphase
- The breakdown of the nuclear envelope marks the beginning of prometaphase.
Telophase
- Nuclear envelopes form around each nucleus during telophase.
Cell Cycle
- DNA replication occurs during the S phase of the cell cycle.
- G0 phase is the specialized resting state for cells in G1 that are not committed to DNA synthesis.
Mitosis
- Mitosis can be divided into four phases based on progress made in the overall nuclear division.
DNA Synthesis
- Upon completion of DNA synthesis, chromosome strands are duplicated.
G2 Phase
- The main function of the G2 phase is to prepare the cell for mitosis, allowing for cell growth and preparation for cell division.
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