Meiosis 1&2 Flashcards

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0
Q

What does meiosis produce?

A

Gametes for sexual reproduction

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1
Q

What is meiosis?

A

Cell division that results in the reduction of chromosome number

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2
Q

What happens in prophase 1?

A

Tetrads forms homologous pairs of chromatids. Chromosomes visible. Crossing over which is exchanging of genes between the homologous pairs.

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3
Q

What’s happens in metaphase 1?

A

Homologous pairs line up in the middle

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4
Q

What happens in anaphase 1?

A

Homologous pairs separate. Sister chromatids still attached at the centromere. Tetrads separate.

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5
Q

What happens in telophase 1?

A

Chromosomes gather at poles

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6
Q

What happens in cytokinesis 1?

A

Forms two cells

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7
Q

What is the end result of meiosis 1?

A

2 cells with 23 chromatids (46 chromosomes) = haploid formed

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8
Q

In meiosis 2 what enters?

A

2 daughter cells

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9
Q

WhT happens in prophase 2?

A

Same as 1 but NO crossing over

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10
Q

What happens in metaphase 2

A

Chromosomes (made of 2 sister chromatids ) line up in middle

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11
Q

What happens in anaphase 2?

A

Sister chromatids are separated and move to poles

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12
Q

What happens telophase 2 & cytokinesis?

A

Nuclear membrane forms & each cell has 23 chromosomes

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13
Q

What is the end result of meiosis?

A

Four daughter cells are formed call gametes and each is haploid

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