Meosis Flashcards

1
Q

how many groups are cell divided into

A

2
GERM CELL
SOMATIC CELLS

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2
Q

(haploid: n)
sperm cells (production: spermatogenesis)
egg cells (production: oogenesis)

A

GERM CELLS

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3
Q

sperm cells produce =

A

SPERMATOGENESIS

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4
Q

egg cells produce=

A

OOGENESIS

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5
Q

(diploid: 2n)
epithelial cells
muscle cells
nerve cells

A

SOMATIC CELLS

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6
Q

the union of two mature sex cells

A

FERTILIZATION

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7
Q

fertilization results to

A

ZYGOTE

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8
Q

how many chromosome from mother and father

A

23

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9
Q

After fertilization, ______ occurs in ______
until ______is formed.

A

MITOSIS/ ZYGOTE/ EMBRYO

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10
Q

diploid cell divides to produce

A

TWO INDENTICAL DIPLOID CELLS

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11
Q

do all somatic cells
contain a diploid number of
chromosomes

A

TRUE

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12
Q

important to reduce the number of
chromosomes from diploid to haploid

A

MEOSIS

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13
Q

necessary to maintain the chromosome
number once sperm & egg cells unite

A

MEOSIS

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14
Q

it will then be maintained through the
process of mitosis

A

MEOSIS

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15
Q

_______ are the first 22 pairs

A

AUTOSOME

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16
Q

is the last pair

A

CHROMOSOMES

17
Q

a pair of one paternal chromosome and one maternal chromosome

18
Q

have the same gene position (locus), length, and centromere location

19
Q

______ is a variant of gene located at a specific locus on a chromosome

20
Q

is an image that shows the 22 pairs of
autosomes and a single pair of sex
chromosomes arranged from the biggest
to the smallest pair

21
Q

similarity in banding pattern
size & shape
centromere location
gene content

22
Q

the process of doing karyogram is referred to as ______

A

KARYOTYPING

23
Q

results in the formation of gametes

24
Q

results in the production of 4 haploid
daughter cells

25
_________: reductional division
MEOSIS 1
26
_________: equational division
MEOSIS 2
27
chromosomes start to coil and shorten nuclear envelope disintegrates homologs pair up through synapsis crossing over, which contributes to genetic variability, may occur between homologs
PROPHASE 1
28
homologs align at the metaphase plate homologs attach to spindle fibers at the kinetochore in their centromeres
META PHASE 1
29
homologs separate chromosomes are moved toward opposite poles by the spindle fibers
ANAPHASE 1
30
chromosomes reach opposite poles cleavage furrow appears and the cytoplasm starts to divide in most organisms, the nuclear membrane forms
TELOPHASE 1
31
nuclear membrane disintegrates new spindle fibers form around the chromosomes
PROPHASE 2
32
chromosomes align at the metaphase plate and attach to spindle fibers at the kinetochore in the centromeres
METPHASE 2
33
each chromosome divides into two sister chromatids chromatids move toward opposite poles
ANAPHASE 2
34
nuclear membrane forms around each set of chromosomes spindle fibers disintegrate
TELOPHASE 2
35
_________ is the reason no two individuals are identical
GENETIC VARIATION
36
takes place during the alignment of homologs in metaphase I in humans with 23 homologs, it could result in about 8 million different gamete combination
INDEPENDENT ASSORTMENT
37
exchange of genetic materials between homologs
CROSSING OVER
38
during fertilization, the fusion of a sperm cell and an egg cell involves a random process the number of possible outcomes is significantly more than the present human population
RANDOM FERTILIZATION
39