Meiosis

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created 6 months ago by staceysavage
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1

Meiosis

also known as reduction division. Type of cell division that occurs in sex cells to produce gametes with half the number of chromosomes.

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gametes

egg and sperm

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haploid

cells that contain half the number of chromosomes as the parent cells

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diploid

cells that contain 2 copies of every type of chromosome (one set from your mom and one set from your dad)

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tetrad

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structure that forms during Meiosis I when the homologous sister chromatids pair up

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crossing over

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when homologous pairs of chromosomes swap genetic information

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What is produced at the end of meiosis?

4 daughter cells with half the genetic info as the parent cells.

Each daughter cell is unique

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Oogenesis

formation of egg cells by meiosis in females (produces 1 egg cell and 3 polar bodies)

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spermatogenesis

formation of sperm cells by meiosis in males. (creates 4 unique sperm)

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zygote

a fertilized egg formed when egg and sperm join together to form a new diploid organism

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telomere

structures on the ends of chromosomes that protect the DNA from unraveling (may contribute to aging)

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homologous chromosomes

chromosomes that contain the same types of information such as genes for hair color, height, eye color, etc.

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somatic cells

typical body cells

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prophase I

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Metaphase I

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Anaphase I

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Telophase I

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Prophase II

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Metaphase II

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Anaphase II

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Telophase II

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