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Biology 106 > Final Study Guide Part III > Flashcards

Final Study Guide Part III Flashcards

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1
Q

Stages of the cell cycle

A

G1, S, G2, Mitosis

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2
Q

G1

A

Growth phase

Protein synthesis

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3
Q

Synthesis (S phase)

A

DNA is replicated

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4
Q

G2

A

Additional growth and preparation for mitosis

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5
Q

Mitosis

A

Process of cell division

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6
Q

Steps of mitosis

A 
Prophase
Metaphase 
Anaphase 
Telophase 
Cytokinesis
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7
Q

Prophase

A

Nuclear envelope disappears, centrosomes migrate to opposite poles, spindle fibers form and attach To centromeres

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8
Q

Metaphase

A

Chromosomes line up along the equator

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9
Q

Anaphase

A

Centromeres of each chromosome divide in half, spindle fibers pull sister chromatids toward poles

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10
Q

Telophase

A

Spindle fibers disappear, nuclear envelope reforms, chromosomes decondense

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11
Q

Function of mitosis for an organism

A

Means of asexual reproduction

All growth takes place through mitosis

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12
Q

How many cells are at the start and end of mitosis

A

Start with one, finish with 2

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13
Q

Steps of meiosis

A

Same basic cell cycle but cell division is now meiosis I and II

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14
Q

Prophase I

A

Nuclear envelope disappears
Centromeres migrate
Spindle fibers appear and attach to centromeres
Synapsid occurs where chromosomes find their homologous pairs— crossing over occurs

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15
Q

Metaphase I

A

Homologous chromosomes line up on random sides

Independent assortment

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16
Q

Anaphase I

A

Homologous chromosomes separate and move to poles

17
Q

Telophase I

A

Nuclear envelope reforms, centrosomes return, spindle fibers disappear

18
Q

Cytokinesis

A

Cell cleaves into 2, non-identical haploid daughter cells

19
Q

Interkinesis

A

Cells grow slightly but no replication of DNA

20
Q

Meiosis II

A

Each cell divides again. Essentially same as meiosis I.

In anaphase II sister chromatids separate and move to poles. 4 non/identity haploid gametes are produced

21
Q

Function of meiosis

A

Reproduction of sex cells (germ)

Starts with one diploid cell, finish with 4 non/identical haploid cells

Biology 106 (23 decks)

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