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science > Topoic Two Meiosis > Flashcards

Topoic Two Meiosis Flashcards

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Biology 101 flashcards
1
Q

Binary fission

A

So parts reproduce and cell divides in half

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2
Q

Gametes

A

Sex cells divide to produce gametes

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3
Q

Spermatogenesis

A

Occurs in Testes

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4
Q

Oogenesis

A

Occurs in the ovaries

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5
Q

Homologous chromosomes

A

I made up of chromosome pairs of approximately the same length centromere position and staining pattern for genes

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6
Q

Meiosis one

A

Separates Homologous chromosomes

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7
Q

Interphase

A

DNA is replicated

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8
Q

Prophase 1

A

Synapsis and crossing over occur

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9
Q

Metaphase 1

A

Tetras lineup on the metaphase plate

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10
Q

Anaphase one

A

Homologous pairs separate

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11
Q

Telophase one

A

This is the first miotic cell division

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12
Q

Cytokonises one

A

Forms Two daughter cells

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13
Q

Meiosis two

A

Separates sister chromatids

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14
Q

Prophase two

A

Each of the daughter cells forms a spindle and double-stranded chromosomes move towards equator

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15
Q

Metaphase 2

A

Chromosomes line up on the metaphase plate

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16
Q

Telophase two

A

Nuclei form at opposite ends

17
Q

Cytokines

A

Cells spilt into four

18
Q

Genetic Diversity

A

When the genes and chromosomes are mixed up during cross over

19
Q

Independent assortment

A

Individual chromosomes a sort independently during gamete production, giving different traits an equal opportunity of occurring together

20
Q

Crossing over

A

Multiplies the already huge number of different gamine types produced by independent assortment

21
Q

Fertilization

A

The fusion of sperm and egg to form a zygote

22
Q

Zygote

A

A fertilized egg

23
Q

Nondisjunction

A

Chromosomes fail separate

24
Q

Monosony

A

Missing sex chromosome - occurs once in 2000 births

25
Q

Karyotipes

A

Can detect chromosome abnormalities

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