Chapter 2 Flashcards
occurrence of terminalization or separation of chromosome legs
diplotene
layers of germ cells all develop in a coordinated, repeating programme known as
seminiferous epithelial cycle (SEC)
give spermatocyte phases
primary and seconday spermatocyte
phase where DNA is replicated and chromosomes are duplicated
s phase
true or false: maturation of oocyte begins after birth
false; it begins before birth
give rise to spermatid
secondary spermatocyte
DNA replication occurs during this phase
a. interphase
b. prophase
c. telophase
d. anaphase
a. interphase
chromatin condenses into chromosomes
a. telophase
b. interphase
c. anaphase
d. prophase
d. prophase
occurence of synapsis and formation of chiasmata
leptotene
thickened stumps of chromosomes
pachus
separation of bivalents to form 2 univalents
anaphase i
with thin thread-like chromatin
leptotene
longest phase in meiosis
prophase i
period of the cell cyle where the cell spends most of its time
interphase
characterized by a missing or partial X chromosome
turner syndrome (XO)
prodyced by type b spermatogonia and give rise to secondary spermatocyte
primary spermatocyte
DNA is found as thin threads of chromatin
a. prophase
b. interphase
c. metaphase
d. anaphase
b. interphase
proacrosomal granules-acrosomal vesicle
golgi phase
give the three spermatogonial phase
type a, intermediate, and type b
chromosomes align in the center
a. interphase
b. anaphase
c. metaphase
d. telophase
c. metaphase
spindle fibers attach to kinetochores in the centromere of each chromosome
a. metaphase
b. prophase
c. telophase
d. anaphase
a. metaphase
occurrence of synapsis and formation of chiasmata
zygotene
characterized by having male sex organs, feminine characteristics, breast development, and lack of facial hair
klinefelter’s syndrome (XXY)
nuclear envelope forms from the endoplasmic reticulum
a. metaphase
b. interphase
c. telophase
d. anaphase
c. telophase
provide the three phases that make up the interphase
g1, s phase, g2
committed to differentiation; pale in color
intermediate spermatogonia
formation of 2 haploid daughter cells
telophase i
the chromosomes move toward the centrioles at each end of the cell
a. prophase
b. interphase
c. metaphase
d. anaphase
d. anaphase
mitosis is ___ ___ plus ____
nuclear division, cytokinesis