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DEVELOPMENTAL BIOLOGY > Chapter 2 > Flashcards

Chapter 2 Flashcards

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1
Q

occurrence of terminalization or separation of chromosome legs

A

diplotene

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2
Q

layers of germ cells all develop in a coordinated, repeating programme known as

A

seminiferous epithelial cycle (SEC)

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3
Q

give spermatocyte phases

A

primary and seconday spermatocyte

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4
Q

phase where DNA is replicated and chromosomes are duplicated

A

s phase

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5
Q

true or false: maturation of oocyte begins after birth

A

false; it begins before birth

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6
Q

give rise to spermatid

A

secondary spermatocyte

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7
Q

DNA replication occurs during this phase
a. interphase
b. prophase
c. telophase
d. anaphase

A

a. interphase

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8
Q

chromatin condenses into chromosomes
a. telophase
b. interphase
c. anaphase
d. prophase

A

d. prophase

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9
Q

occurence of synapsis and formation of chiasmata

A

leptotene

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10
Q

thickened stumps of chromosomes

A

pachus

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11
Q

separation of bivalents to form 2 univalents

A

anaphase i

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12
Q

with thin thread-like chromatin

A

leptotene

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13
Q

longest phase in meiosis

A

prophase i

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14
Q

period of the cell cyle where the cell spends most of its time

A

interphase

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15
Q

characterized by a missing or partial X chromosome

A

turner syndrome (XO)

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16
Q

prodyced by type b spermatogonia and give rise to secondary spermatocyte

A

primary spermatocyte

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17
Q

DNA is found as thin threads of chromatin
a. prophase
b. interphase
c. metaphase
d. anaphase

A

b. interphase

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18
Q

proacrosomal granules-acrosomal vesicle

A

golgi phase

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19
Q

give the three spermatogonial phase

A

type a, intermediate, and type b

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20
Q

chromosomes align in the center
a. interphase
b. anaphase
c. metaphase
d. telophase

A

c. metaphase

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21
Q

spindle fibers attach to kinetochores in the centromere of each chromosome
a. metaphase
b. prophase
c. telophase
d. anaphase

A

a. metaphase

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22
Q

occurrence of synapsis and formation of chiasmata

A

zygotene

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23
Q

characterized by having male sex organs, feminine characteristics, breast development, and lack of facial hair

A

klinefelter’s syndrome (XXY)

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24
Q

nuclear envelope forms from the endoplasmic reticulum
a. metaphase
b. interphase
c. telophase
d. anaphase

A

c. telophase

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25
provide the three phases that make up the interphase
g1, s phase, g2
26
committed to differentiation; pale in color
intermediate spermatogonia
27
formation of 2 haploid daughter cells
telophase i
28
the chromosomes move toward the centrioles at each end of the cell a. prophase b. interphase c. metaphase d. anaphase
d. anaphase
29
mitosis is ___ ___ plus ____
nuclear division, cytokinesis
30
down syndrome is caused by extra copy of
chromosome 21
31
manchette (flagellum developmetn); condensed nucleus
acrosome phase
32
cell composing the bulk of the body
somatic cells
33
occurrence of terminalization (separation of the chromosome legs; chiasmata proceeds to the terminal ends)
diplotene
34
mitosis produces ___ ___ cells a. two diploid b. two haploid c. one haploid d. one diploid
a. two diploid
35
alignment of bivalents at the equatorial plane
metaphase i
36
spindle fibers and microtubules project a. metaphase b. telophase c. prophase d. interphase
c. prophase
37
trisomy 13
patau syndrome
38
prepares for cell division; where cell continually imbibes water or nutrients to grow
g1 phase
39
abnormality characterized by flat, broad face, oblique palpebral fissures, epicanthus, and furrowed lower lip
down syndrome
40
give the uses of mitosis
1) growth 2) cell repair 3) cell replacement
41
the chromosomes unravel to become chromatin threads a. metaphase b. interphase c. telophase d. prophase
c. telophase
42
true or false: there are two waves in human seminiferous tubule
false; there is no waves in human seminiferous tubule
43
nuclear envelope disappear; centrioles move to opposite ends of the cell a. prophase b. telophase c. metaphase d. interphase
a. prophase
44
univalents contract
prophase ii
45
chromosomes at maximum contraction
diakinesis
46
formation of female gametes
oogenesis
47
separation of univalents into 2 sister chromatids & migration to the opposite poles
anaphase ii
48
maturation of sperm cells
spermiogenesis
49
differentiated from type a spermatogonia; the last event
type b spermatogonia
50
trisomy 21
down syndrome
51
give the spermatid phases
golgi, cap, acrosome, and maturation phase
52
formation of the acrosomal cap
cap phase
53
residual body is pinched off and pagocytized by sertolli cells
maturation phase
54
what is the old name for meiosis?
reduction/division
55
the stem cells of the seminiferous tubules; usually dark in color
type a spermatogonia
56
the chromosome number is ___ in anaphase a. halved b. doubled
b. doubled
57
alignment of univalents at equatorial plane
metaphase ii
58
stage of interphase in which RNA and protein are synthesized
g2 phase
59
trisomy 18
edward's syndrome
60
provide the 3 stages of growing follicle
primary (preantral), secondary (antral), and preovulatory
61
axonemal complex
sperm tail
62
formation of 4 haploid daughter cells
telophase ii
63
edward's syndrome is caused by extra copy of
chromosome 18
64
give examples of somatic cells
nerve cell, muscle cells, kidney cell
65
with pachus, thickened stumps of chromosomes
pachytene
66
microdeletion occurs on the long arm of chromosome 15 in maternal chromosome
angelman syndrome
67
reproductive cells
gametic cells
68
series of events that cells go through as they grow and divide
cell cycle
69
patau syndome is caused by
extra copy of chromosome 13
70
origin and development of sperm cells
spermatogenesis
71
(true or false) most of the differences between the processes between mitosis and meiosis occur during meiosis II
false; happens during meiosis i
72
phases of mitosis
prophase, prometaphase, metaphase, anaphase, telophase
73
true or false: there are 6 stages in man in the cycle of the seminiferous epithelium
true
74
microdeletion occurs on the long arm of paternal chromosome
prader-willi syndrome

DEVELOPMENTAL BIOLOGY (10 decks)

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