Meiosis Flashcards

1
Q

Meiosis:

A

Only occurs in gametes, which are sperm and ova cells, results in four unique daughter cells that are half of the number of parent cellst that are haploid

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2
Q

Crossing over:

A

crossing over occurs in prophase one of meiosis,
Crossing over is the exchange of genetic material between homologous chromosomes during meiosis.

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3
Q

Steps of meiosis:

A

Prophase 1: nucleus breaks down, crossing over occurs,

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4
Q

Metaphase 1:

A

homologous pairs of chromosomes line up at middle of cell

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5
Q

Anaphase 1:

A

homologous chromosomes are pulled to opposite ends of the cell

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6
Q

Telophase and cytokinesis:

A

nuclear membrane reappears, haploid cells are created, cell membrane pinches in

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7
Q

Prophase 2:

A

no crossing over, no replication but other than that same as prophase 1

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8
Q

Metaphase 2:

A

single chromosomes, two sister chromatids line up in center of cell

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9
Q

Anaphase 2:

A

sister chromatids are pulled to opposite ends of cell

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10
Q

Telophase 2 and cytokinesis:

A

Nuclear membrane reforms, chromones disperse into chromatin

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11
Q

End result:

A

4 genetically unique daughter cells that are haploid.

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