Cell Cycle and Meiosis Concepts

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Cell Cycle

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Series of events in a cell leading to its division and duplication.

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Phases of Cell Cycle

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G1, S, G2, M

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G1 Phase

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Cell growth and preparation for DNA replication.

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S Phase

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DNA replication occurs.

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G2 Phase

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Preparation for mitosis; cell growth continues.

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M Phase

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Mitosis and cytokinesis; cell division.

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Crossing Over

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Exchange of genetic material between homologous chromosomes during meiosis.

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Meiosis

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Type of cell division that reduces chromosome number by half, creating four haploid cells.

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Importance of Meiosis

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Genetic diversity through recombination and independent assortment.

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Cancer

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Uncontrolled cell division due to mutations.