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(Stages of Meiosis:, Meiosis I (Reduction Division):, Prophase I:…
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Prophase I: Chromosomes condense, homologous chromosomes pair up to form tetrads, and crossing over occurs. Spindle fibers form, and the nuclear membrane dissolves.
Metaphase I: Homologous chromosome pairs align at the cell center, with random alignment (independent assortment) for genetic variation.
Anaphase I: Homologous chromosomes are pulled to opposite poles, reducing chromosome number by half.
Telophase I: Chromosomes reach poles, nuclear membranes reform, and cytokinesis occurs, producing two haploid daughter cells.
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Prophase II: Chromosomes condense, spindle fibers form, and nuclear membranes dissolve.
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Telophase II: Chromatids reach poles, nuclear membranes reform, and cytokinesis results in four haploid, non-identical cells.
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Crossing Over (Prophase I): Homologous chromosomes exchange genetic material, increasing diversity.
Independent Assortment (Metaphase I): Random alignment and distribution of chromosomes lead to genetic variation.
Cytokinesis: Cytoplasm divides, creating two daughter cells in Meiosis I and four haploid cells in Meiosis II.
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the cell cycle
MITOSIS
purpose
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stages
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Cytokinesis
Cytoplasm divides
Two daughter cells form, each with organelles and nucleus
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what is interphase?
It is divided into three phases: S (DNA synthesis), G1 (cell growth and organelle replication), and G2 (final growth and mistake repair).
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Proper division and genetic stability depend on checkpoints during interphase, which maintain DNA stability and proper replication.
What is Meiosis?
A type of cell division that results in four daughter cells, each with half the number of chromosomes of the parent cell.
Essential for sexual reproduction, producing sperm in males and eggs in females.
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the interphase is the longest stage of the cell cycle, interphase is when the cell divides, grows, copies its DNA, and goes through its regular processes.
The random alignment of homologous chromosomes is called independent assortment, which also contributes to genetic variation.
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