Meiosis Flashcards

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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

A

8,688,608

20
Q

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

A

Cytokinesis

21
Q

Equational Division

A

Meiosis 2

22
Q

Forms four new haploid gametes

A

Meiosis 2

23
Q

Having extra chromosomes

A

Trisomy

24
Q

Resulting in missing chromosomes

A

Monosomy

25
Q

Disorder where twenty-first chromosome have three instead of two chromosomes.

A

Down Syndrome: Trisomy 21

26
Q

Often have heart defects, brain and spinal cord abnormalities. Where the thirteenth chromosomes have three

A

Trisomy 13: Patau Syndrome

27
Q

Three copies of chromosome 18

A

Trisomy 18: Edwards Syndrome

28
Q

Chromosomal abnormality affecting the physical and cognitive development in males.

A

Klinefelter Syndrome

29
Q

Individual has only the single sex chromosome X

A

Turners Syndrome

30
Q

Single-celled organism

A

Prokaryotic

31
Q

Where prokaryotic DNA is found

A

Nucleoid

32
Q

Acts as an extra layer of protection, helps maintain its shape and prevents dehydration.

A

Peptidoglycan Cell Wall

33
Q

Enables the cell to attach to surfaces in the environment

A

Polysaccharide Capsule

34
Q

Used for locomotion

A

Flagella

35
Q

Used to exchange genetic material

A

Pili

36
Q

Used to attach to a host cell

A

Fimbriae

37
Q

Multicellular organisms

A

Eukaryotic Cell