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SCIENCE > Meiosis 9 > Flashcards

Meiosis 9 Flashcards

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Biology 101 flashcards
1
Q

Embryo

A

Develops a form of zygote.

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2
Q

How many body cells do humans have.

A

46 chromosomes

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3
Q

Diploid

A

2 set of chromosomes

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4
Q

Haploid

A

1 set of chromosomes

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5
Q

The process of meiosis produce gametes with ________ as body cells

A

1/2 the number of chromosomes (23 from each parent)

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6
Q

Sexual Reproduction

A

Requires 2 parents and increases genetic diversity.

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7
Q

Gametes

A

Specialized cells; sperm from males and eggs from females.

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8
Q

Genetic Diversity

A

Variety in species.

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9
Q

Homologous chromosomes

A

Matching chromosomes

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10
Q

Zygote

A

New diploid cell formed by the process of fertilization.

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11
Q

Meiosis 1

A

Starts with a diploid cell and ends with 2 haploid cells

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12
Q

Meiosis 2

A

Starts with a diploid cell and ends with 4 haploid cells.

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13
Q

Interphase 1

A

Same as everything in mitosis

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14
Q

Fertilization

A

Process in which from two parents combine.

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15
Q

Prophase 1

A

Chromosomes begins to condense and pair up. Align with their homologous partner so they match up.

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16
Q

Prophase 2

A

Daughter cells only have 1 copy of each homologous chromosome
No synapsis/crossing over.

17
Q

Metaphase 2

A

Sister chromatids line up across the middle of the cell and is completely random.

18
Q

Anaphase 2

A

Pulled to the end of the cell.

19
Q

Telophase 2

A

Cytoplasm is reformed

2 cells one cytoplasm

20
Q

Cytokinesis

A

Separation of 2 cells resulting in 4 unique haploid cells.

Gametes

21
Q

Interphase

A

G1: Growth and preparation
S: DNA replication
G2: Grows more and prepares for mitosis

22
Q

Prophase Early

A

Replicated DNA coil into x-shape chromosomes

23
Q

Prophase Late

A

Spindle fibres attach to centromere

24
Q

Metaphase

A

Spindle fibres pull the chromosomes into a single line.

25
Q

Anaphase

A

Spindle fibres contract and pull centromere apart separating sister chromatids.

26
Q

Telophase

A

Spindle fibres disappears.
Nucleus membrane forms around a DNA.
Nucleulos returns.

SCIENCE (9 decks)

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