Meiosis Flashcards

1
Q

Union of two cells from two individual organisms

A

Fertilization

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2
Q

Cells that contains one set of chromosomes

A

Haploid Cells

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3
Q

Cells that contains two sets of chromosomes

A

Diploid Cells

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4
Q

Nucleus contains two copies of each chromosomes called?

A

Homologous Chromosomes

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5
Q

Nuclear division that forms haploid cells

A

Meiosis

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6
Q

Two rounds of Meiosis

A
  1. Meiosis 1
  2. Meiosis 2
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7
Q

First round of meiotic division

A

Meiosis 1

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8
Q

Second round of meiotic division

A

Meiosis 2

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9
Q

Reductional Division

A

Meiosis 1

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10
Q

Focuses on the division of homologous chromosomes to produce two haploid cells which duplicates chromosomes

A

Meiosis 1

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11
Q

Phases of Meiosis 1

A
  1. Prophase 1
  2. Prometaphase 1
  3. Metaphase 1
  4. Anaphase 1
  5. Telophase 1
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12
Q

Highly organized proteins between the homologous chromosomes

A

Synaptonemal Complex

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13
Q

Five substages of Prophase 1

A
  1. Leptonema
  2. Zygonema
  3. Pachynema
  4. Diplonema
  5. Diakinesis
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14
Q

Pairing and twisting of chromosomes

A

Synapsis

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15
Q

Process of physical exchange of a chromosome region

A

Crossing-Over

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16
Q

Large protein assemblies that are located at intervals along synaptonemal complex

A

Recombination Nodules

17
Q

Spindle fiber that has attached to a kinetochore

A

Kinetochore Microtubule

18
Q

How many chromosome pairs are in a human?

A

23 Chromosome Pairs

19
Q

Number of possible genetically distinct gametes

20
Q

The physical separation of the cytoplasmic components into two daughter cells.

A

Cytokinesis

21
Q

Equational Division

22
Q

Forms four new haploid gametes

23
Q

Having extra chromosomes

24
Q

Resulting in missing chromosomes

25
Disorder where twenty-first chromosome have three instead of two chromosomes.
Down Syndrome: Trisomy 21
26
Often have heart defects, brain and spinal cord abnormalities. Where the thirteenth chromosomes have three
Trisomy 13: Patau Syndrome
27
Three copies of chromosome 18
Trisomy 18: Edwards Syndrome
28
Chromosomal abnormality affecting the physical and cognitive development in males.
Klinefelter Syndrome
29
Individual has only the single sex chromosome X
Turners Syndrome
30
Single-celled organism
Prokaryotic
31
Where prokaryotic DNA is found
Nucleoid
32
Acts as an extra layer of protection, helps maintain its shape and prevents dehydration.
Peptidoglycan Cell Wall
33
Enables the cell to attach to surfaces in the environment
Polysaccharide Capsule
34
Used for locomotion
Flagella
35
Used to exchange genetic material
Pili
36
Used to attach to a host cell
Fimbriae
37
Multicellular organisms
Eukaryotic Cell