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Meiosis & Mitosis > Meiosis > Flashcards

Meiosis Flashcards

Vocab & Q

1
Q

In what ways is meiosis 2 similar to and different from mitosis of a diploid cell?

A

Different In meiosis II dividingcellhas homologous chromosomes.
The same: eachcellhas half the number of sister chromatids to separate out as adiploid cellundergoingmitosis.

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2
Q

What are the 4 stages of meiosis?

A

PMAT

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3
Q

What does 2n 4 mean?

A

Begins with 2 homologous chromosomes cells but ends with 4 hologous cells 😁😁😁😁

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4
Q

What are 4 differences between meiosis and mitosis?

A

Mitosisgives nuclei with the same number of chromosomes as the mother cell whilemeiosisgives cells with half the number.Mitosisincludes one division , whilemeiosisincludes two

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5
Q

Why is meiosis important list 2 reasons?

A

Meiosisisimportantbecause it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes.Meiosisalso produces genetic variation by way of the process of recombination.

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6
Q

What is the purpose of meiosis II?

A

Thepurpose of meiosisis to reduce the normal diploid cells (2copies of each chromosome / cell) to haploid cells, called gamete

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7
Q

Why is meiosis important for the survival of species?

A

because it creates genetic diversity in the population.

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8
Q

interphase

A

cell replicates chromosomes

- each chromosome now consists of 2 identical sister chromatids

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9
Q

prophase I

A

DNA coils, spindle forms

  • chromosomes line up with their homologous pair to transfer genetic info. Making a recombinant chromosome
  • crossing over occurs. They break and re-attach themselves.
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10
Q

metaphase I

A

centromere of each chromosome attaches to a spindle fiber

- homologous chromosomes line up in the middle

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11
Q

anaphase I

A 
homologous chromosomes (each with 2 identical chromatids) are pulled apart
- sister chromatids do not separate
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12
Q

telophase I

A

spindle is broken down
- chromosomes uncoil
- cytoplasm divides
Nuclei starts forming

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13
Q

What is the difference between mitosis 1 and 2?

A

Answer: InmeiosisI, homologous chromosomes separate, while inmeiosisII, sister chromatids separate.MeiosisII produces 4 haploid daughter cells, whereasMeiosisI produces2diploid daughter cells.

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14
Q

Why are haploid cells different from each other

A

Because they develop into sperm or egg cells

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15
Q

How many copies of chromosomes does the cell get in the process of meiosis

A

1

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16
Q

What type of chromosomes does the cell get from the two parents

A

A mixture of chromosomes

17
Q

Meiosis helps with

A

Variation in the species. It makes it possible for The Offspring to have a better chance of adapting to a new environment

18
Q

What is Down syndrome

A

The example of an extra chromosome. Happens in the meiosis makes cells with extra chromosomes are missing chromosome

19
Q

The example of an extra chromosome. Happens in the meiosis makes cells with extra chromosomes or missing chromosome. What is this called

A

Nondisjunction

20
Q

How do chromosomal abnormalities be detected during pregnancy

A

By removing cells created by the embryo in the fluid of the uterus

21
Q

removing cells created by the embryo in the fluid of the uterus. What is this process called

A

Amniocentesis or chorionic villus sampling

22
Q

Asexual animals reproduce with what cell division

A

Mitosis

23
Q

The cell is at rest in what phase of interphase

A

Go Phase

24
Q

In what phase of interphase is a molecule produced for building new organelles

A

G 1 phase

25
Q

In what phase of interphase is DNA replicated

A

S phase

26
Q

What does the word metastasized mean

A

Spread

27
Q

What is a characteristic of cancer cells

A

Cancer cells ignore chemical signals to stop reproducing
Cancer cells form disorganized layers
Cancer cells form a mass or tumor of unspecialized function cells

28
Q

What type of cell division is involved in the division of a fertilized egg

A

Mitosis

29
Q

How many different sperm cells can one human make

A

16000

Meiosis & Mitosis (1 decks)

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