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Questions and Answers
What is the name for the 'in between' phase in cell divisions?
What is the name for the 'in between' phase in cell divisions?
Interphase
In interphase, the DNA is in the form of loose threads called?
In interphase, the DNA is in the form of loose threads called?
Chromatin
During Prophase, DNA condenses into X-shaped structures called?
During Prophase, DNA condenses into X-shaped structures called?
Centrioles
During metaphase, the chromosomes line up along the middle of the cell called?
During metaphase, the chromosomes line up along the middle of the cell called?
During what stage do the chromosomes pull apart?
During what stage do the chromosomes pull apart?
What is another name for cell division?
What is another name for cell division?
What structure reappears during telophase?
What structure reappears during telophase?
During which stage does the DNA copy itself?
During which stage does the DNA copy itself?
The spindle attaches to what structure?
The spindle attaches to what structure?
During which phase does the spindle form?
During which phase does the spindle form?
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Study Notes
Mitosis Overview
- Cell division is also known as mitosis, a crucial process for growth and repair.
- Interphase is the preparatory phase before mitosis, representing the "in between" stage.
DNA Structure
- During interphase, DNA exists as chromatin, characterized by loose threads that allow for gene expression and DNA replication.
- At the onset of prophase, chromatin condenses into visible X-shaped structures known as chromosomes.
Phases of Mitosis
- Prophase: Chromosomes become distinct as they condense, and spindle fibers begin to form.
- Metaphase: Chromosomes align at the cell's equator, positioned for separation.
- Anaphase: Chromosomes separate and move toward opposite poles, ensuring accurate distribution of genetic material.
Telophase and Cell Components
- Telophase: The nuclear membrane reappears around each set of chromosomes, signaling the nearing end of mitosis.
- The spindle apparatus attaches to chromosomes at specialized regions during the metaphase, facilitating their movement.
Key Processes
- DNA replication occurs during interphase, ensuring each new cell receives an identical set of chromosomes.
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