Cellular Reproduction Flashcards

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1
Q

cellular respiration

A
  • parent cell pass on genetic info. to daughter cell

- cell division!

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2
Q

asexual reproduction

A
  • produces daughter cells identical to parent
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3
Q

types of asexual reproduction

A
  • binary fission

- mitosis

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4
Q

binary fission

A
  • chromosome binds to plasma membrane
  • grows larger
  • divides / replicates (pinches off) into 2 daughter cells
  • CYTOKINESIS
  • origin from 1 cell
  • produce DIPLOID
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5
Q

stages of mitosis

A
  • 5 stages
  • prophase
  • metaphase
  • anaphase
  • telophase
  • cytokinesis
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6
Q

interphase

mitosis

A
  • cell grows
  • duplicates
  • always beginning of cell division
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7
Q

prophase (mitosis)

A
  • duplicated chromosomes condense
  • nuclear membrane breaks down
  • spindle apparatus at each pole
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8
Q

metaphase (mitosis)

A
  • condensed chromosome line up

- attaches to spindle

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9
Q

anaphase (mitosis)

A
  • chromosomes migrate to opposite sides
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10
Q

telophase

A
  • spindle breaks down
  • nuclear membrane forms around new set of daughter cells
  • into cytokinesis
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11
Q

cytokinesis (mitosis)

A
  • cell pinches into 2

- forms identical cells

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12
Q

sexual reproduction

A
  • 2 cells = genetic material = variation = cells NOT ALIKE
  • cells = gametes
  • produce 4 haploid (contain half chromosomes of parents)
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13
Q

types of sexual reproduction

A
  • meiosis I

- meiosis II

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14
Q

meiosis I

A
  • prophase I
  • metaphase I
  • anaphase I
  • telophase I
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15
Q

prophase I

A
  • duplicated chromosomes condense
  • pair up / align
  • forms TETRADS of 4 chromatids each
  • homologous chromosomes trade / recombine / crossing over!
  • nuclear membrane breaks down
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16
Q

metaphase I

A
  • tetrads align

- has centromere of homologous chromosomes facing opposite ends of cell (K)

17
Q

anaphase I

A
  • chromosomes migrate to opposite ends of cell

- sister chromatids remain

18
Q

telophase I

A
  • each end of cell = haploid
  • NOT IDENTICAL
  • nuclear membrane forms
19
Q

meiosis II

A
  • similar to mitosis

- no crossing over like meiosis I

20
Q

prophase II

A
  • chromosomes condense
  • nuclear membrane breaks down
  • spindle apparatus forms each pole of haploid cell
21
Q

metaphase II

A
  • condensed chromosome line up

- attach to haploid cell

22
Q

anaphase II

A
  • chromosomes separate into sister chromatids = migrate to ends
23
Q

telophase II

A
  • spindle breaks down
  • nuclear membrane forms
  • new daughter cells
24
Q

what is the end result of meiosis I and meiosis II?

A
  • 4 daughter cells containing 1 chromatid
25
Q

polar bodies

A
  • cells that do not develop into ova
26
Q

parthenogenesis

A
  • some animals and vertebrates reproduce this way

- animal clones itself using polar body and bypasses fertilization