Meiosis I and II

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12 Terms

1
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Meiosis I

- creates 2 haploid daughter cells
- daughter cells have only half the number of chromosomes of the parent cell

<p>- creates 2 haploid daughter cells<br>- daughter cells have only half the number of chromosomes of the parent cell</p>
2
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Prophase I

- The nuclear envelope breaks down
- Chromosomes condense
- crossing over occurs here

<p>- The nuclear envelope breaks down<br>- Chromosomes condense<br>- crossing over occurs here</p>
3
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Metaphase I

- Homologous chromosomes line up at the center of the cell (independent assortment)
- "Middle"

<p>- Homologous chromosomes line up at the center of the cell (independent assortment) <br>- "Middle"</p>
4
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Anaphase I

- Homologous chromosomes separate
- Move to opposite poles of the cell
- "Apart"

<p>- Homologous chromosomes separate <br>- Move to opposite poles of the cell<br>- "Apart"</p>
5
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Telophase I

- Chromosomes gather at the poles

<p>- Chromosomes gather at the poles</p>
6
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Cytokinesis I

- cytoplasm divides

<p>- cytoplasm divides</p>
7
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Meiosis II

- sister chromatids in the two daughter cells separate
- each dividing cell has only one set of homologous chromosomes
- no DNA is replicated
- creates 4 haploid daughter cells

<p>- sister chromatids in the two daughter cells separate<br>- each dividing cell has only one set of homologous chromosomes<br>- no DNA is replicated<br>- creates 4 haploid daughter cells</p>
8
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Prophase II

- chromosomes condense
- a new Spindle forms
- nuclear envelope breaks down

<p>- chromosomes condense <br>- a new Spindle forms<br>- nuclear envelope breaks down</p>
9
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Metaphase II

- chromosomes line up in the middle of the cell
- at the equator

<p>- chromosomes line up in the middle of the cell<br>- at the equator</p>
10
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Anaphase II

- sister chromatids separate and move to opposite sides of the cell
- centromeres divide

<p>- sister chromatids separate and move to opposite sides of the cell<br>- centromeres divide</p>
11
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Telophase II

- A nuclear envelope forms around each set of chromosomes

<p>- A nuclear envelope forms around each set of chromosomes</p>
12
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Cytokinesis II

- the cells divide into 4 haploid cells

<p>- the cells divide into 4 haploid cells</p>