Meiosis Flashcards

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1
Q

Gametes are

A

sex cells

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2
Q

Which cells produce gametes

A

Germ cells

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3
Q

Male gamete production is called

A

spermatogenesis

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4
Q

Female gamete production is called

A

oogenesis

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5
Q

meiosis is the process by which

A

one diploid cell produces four haploid cells

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6
Q

Diploid =

A

a cell containing two sets of chromosomes

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7
Q

Haploid =

A

a cell containing a single set of chromosomes

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8
Q

In Prophase I

A

Chromosomes become visible and the nucleolus disappears, meiotic spindles form

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9
Q

In Metaphase I

A

Pairs of chromosomes arrange themselves on the metaphase plate and meiotic spindles attach

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10
Q

In Anaphase I

A

homologous chromosomes are pulled towards opposite poles of the cell

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11
Q

In Telophase I

A

Chromosomes become enclosed in the nuclei and cytoplasm is divided between the 2 sister cells during cytokenisis

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12
Q

in Prophase II

A

nuclear envelope breaks down and spindle apparatus form

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13
Q

In prophase II there is no

A

further duplication of chromosomes

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14
Q

in Metaphase II

A

chromosomes line up individually at the cell equator

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15
Q

In Anaphase II

A

Sister chromatids seperate and are pulled to opposite poles of the cell

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16
Q

In Telophase II

A

the nuclear envelope forms around each set of chromosomes and cytokinesis occurs

17
Q

Unlike mitosis, the daughter cells formed during meiosis are

A

not identical

18
Q

What occurs during meiosis

A

reshuffling or recombination of genetic material

19
Q

Crossing over is the

A

swapping of genetic material

20
Q

swapping of genetic material occurs in which part of meiosis?

A

The first

21
Q

The point of cross over is referred to as

A

chiasma

22
Q

What is the point of recombination?

A

To produce new variants of genetic material within chromosomes

23
Q

What does meiosis create in organisms?

A

Genetic diversity

24
Q

what is the formula for independent assortment?

A

2^n, where n = half of the total assortments

25
Q

Error in meiosis can occur in

A

polyploidy or non-disjunction

26
Q

Non-disjunction is where

A

chromosomes do not seperate, causing anaploidy

27
Q

Aneuploidy/polyploidy is an

A

abnormal number of chromosomes